Our aliens porn games catalogue counts dozens of them in total. Compilation of Sex Games with Aliens includes best adult games with UFO to relax and spend time.

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Sex Games with Aliens

UFO

Witch Girl [Uncensored]

Witch Girl is an erotic, action-adventure side scrolling game that follows a skilled sorceress who ventures into an unknown forest seeking an ancient treasure. She explores the mysterious forest inhabited with all manner of monsters that thrive on the sexual energy of those they encounter along the forbidden path. For someone with such an incredibly busty physique, our witch is a perfect girl for different sex acts and positions with various monsters. Will she be put down on all fours in doggystyle? Made to give blowjobs and take cumshots? Creamed until she’s completely full? Milked until she has nothing left to give? So many possibilities and it is all UNCENSORED! Guide Witch Girl along this challenging yet erotically-stimulating journey into the unknown. Help her succeed and discover riches or watch her drown in a sea of pleasure? It is totally your call!

3.7M 78% 141 Recommended Flash

The Void Club Ch.10

Another new chapter in this series and this time, the game is a One Piece hentai parody that features several of your favorite characters from the popular Japanese manga series. You will get to have fun with your sex slave Sylvia and also meet several characters from Straw Hats crew including Nami and Robin, as well as Kikyo, Marguerite and others. As always, the mission to find the perfect girls to bring to your sex club. Much like the other games, you will have to make certain decisions to progress through the story. Keep in mind, you can click on the icon at the bottom right corner to skip messages in the settings.

525.1K 61% 14 HTML

Aeon’s Echo: The Game (Sp0ns0red)

Dive into the enchanting world of Aeons Echo! As the protagonist, you will interact, bond, and evolve with various captivating goddesses. Enjoy an immersive role-playing adventure in a visually stunning universe. Play Free now!

6.2M 100%

Individual Tentacle

In this eroge, you get to follow another strange story about young women who find themselves being unwittingly taken advantage of by different monsters with tentacles. This release starts slowly with a cute bishōjo having sex with her boyfriend until a tentacle creature enters the home and starts to take advantage of her. This hentai game features several sex scenes, 135 looping sex animations to be exact, some of which feature ahegao, sumata, shibari, and even nakadashi. As always, all of this has censorship, as well as Japanese voice and text but the story is fairly simple enough to follow, so you only need to click through the scenes to progress through to the end.

272.2K 61% 4 Flash

Ass Effect

In this thrilling Mass Effect parody, you have the ultimate chance to interact with several characters from the original game. This includes Tali, Kahne, Sulam, Tusvaklus, and Shepard. If you love a good sci-fi story, then this should satisfy your sense of adventure and even quench your desire to see hot sexy women getting naked and taken to pound-town. With 5 hardcore sex scenes waiting for you to explore, it is up to you to progress through the game to see just how perverted things get. Just keep in mind that you can’t skip the text until it fully appears and you click on ‘Next’.

329.5K 60% 7 HTML

Para Ark [v 1.05]

You will take the role of a captain girl named Sasha. Every scene is happening on the spaceship. Evidently, Sasha is suffering from a mild case of amnesia and doesn't seem to remember anything. She was captain of the bigger ship (Para Ark) which she had to evacuate due to reasons she cannot remember. Sasha is an important researcher tasked with finding the cure of a dangerous disease. Together with Christy (your AI assistant), Sasha makes it her priority to restore her memory. In the process, she interacts with different alien monsters that are thirsty for her pussy. She is far away from Earth and she wants sex. Under these odd circumstances, Sasha gladly allows the monster dicks to fuck her all day long begging them to never stop. She wants to be bred really bad!

646.9K 72% 113 Shemales RPG Maker

Agony of the Healthy Sleep [Final Day]

This is the story about a guy who can't fall asleep. Of course such things bring some consequences and he gets into another dimension as he closes his eyes. Also some strange things start to happen and world changes it's looks.

190.6K 76% 19 RPG Maker

Dimitrescu's Lewd Castle [Ch. 1-6.5]

This is a Resident Evil parody game that follows the busty Alcina Dimitrescu, aka Lady Dimitrescu, who is currently in control of the dangerous vampire village. An elegant and poised woman with big tits, she is as sexy as she is dangerous with many brave men having tried and failed to take her down. Most of them have been stoped by her vampire girls, so you must make your way into Castle Dimitrescu to take down the immortal fiend and her vampires. If you’re lucky, you may even get the chance to have sex with these monster babes.

501K 75% 37 Ren'Py

Pizzaboy Ultimate

This is the second part of the game and things are only getting hotter. In this episode, your task will be to do whatever it takes to deliver pizzas to your clients. You are very passionate about your work and are determined to deliver the best service there is. But this won't be that easy. You will have to avoid or fight against criminals. It's like you are the Greek god Hermes because you will be able to fly and soar in the sky. Use your flying powers to avoid criminals and engage them in intense sky battles. When you successfully deliver the packages to your clients, they will be happy to tip you and not just with cash. You will also enjoy some sexual rewards.

265.5K 58% 17 HTML

Veronica on the Mystery Island

It was summer of 2016, when Veronica was finally able to escape from the BDSM dungeon and return back to her home in Ukraine. Unfortunately, the plane had crashed. She is the only survivor on the mystery island. Cell phones don't work here so she must find some other help.

573.7K 65% 15 Recommended Flash

SIMSEH 2: Milkania

Super Intergalactic MILF Seeding Expert Henshi. This is a story about an alien who travels around the space looking for sex. To move use W A S D, Jump below S+E, Check something - E, Skip something - Space, B to open info window.

591.4K 62% 48 Recommended Flash

Violet and Labrn

This a New sexy Animation. The type that makes you horny and leaves you craving for more action. Imagine sexy monsters with human bodies. They turn you on, don't they? If they do, then feast on this game. There are different actions for you to perform. Pick any of them or do all of them. You can choose to slowly stroke a monster cock, touch and play with the pussy, grab tits and so much more. You can decide to fuck the sexy monster babes in every hole. Her pussy and ass will beg you for more pounding so don't disappoint. Another plus is that you can watch this game with old school cinema effects.

576.7K 78% 60 Recommended Flash

High Tale Hall 2: Glass Room

This game may give you a lot of deja Vu. You return to High Tale Hall which looks like a revamped highschool. You are more than welcome to enjoy tons of furry sex. This world is full of furry Hentai sex specially made for you. If you love furries then you are spoilt for choice. You can fuck all the furry sluts in the game for as long as you want. You get to fuck 4 different babes for as long as you want. They are quite hot and are thirsty for some action so you better give it to them. The game has a few bugs but don't let it deter you from fucking these gorgeous babes.

551K 65% 20 Flash

Pantograph

This is another hentai release from AKATA that is created for all alien and monster sex lovers. In this compilation, we follow the story of three sexy bishōjo with huge oppai from the Earth Defense Force who go out to try and put an end to the tyranny of these creatures on the human race. However, in the process, they find themselves captured and helpless, under the control of these monster aliens. Since these creatures are sexually depraved, all they want to do is explore their bodies in different ways. As such, there will be a lot of ahegao, shibari, and nakadashi to enjoy in this eroge. Will these women survive the sexual onslaught or fall into depravity? Hit play to find out!

248.3K 58% 3 Flash

Summoners Quest Ch.2

The story of the Summoner's medieval journey continues in this immersive game. As before, your ultimate reward is a tantalizing sex animation, but to get there, you'll need to engage your mind and answer a series of quiz-style questions. Immerse yourself in a richly detailed medieval world, where every decision and answer you provide brings you closer to unlocking the next chapter of the Summoner's adventure. Navigate through beautifully crafted scenes, each filled with lore and challenges that test your knowledge and wit. As you progress, the anticipation builds, culminating in a rewarding and explicit animation that celebrates your journey. This game combines elements of adventure, strategy, and eroticism, offering a unique experience that keeps you engaged from start to finish. Will you be able to answer all the questions correctly and reach the coveted prize? Embark on the Summoner's medieval journey now and discover the sensual rewards that await your intellect and curiosity. Enjoy the perfect blend of challenge and allure in this captivating continuation of the Summoner's tale.

232.6K 71% 3 Flash

Pussymon 9

In this Pussymon release titled The Task, you and your crew head to the Pussymon Hunter Society but find yourselves frozen at the gate. To enter, Master Oswald states that you must first become a member of the society, which requires you to defeat the twin golems. Accompanied by Dot, Bridget, Valerie, and others, you embark on the quest and along the way, you get to capture and have sex with a bunch of other new Pussymons that you meet. In this version, there are new body shapes/sizes, and a new type of Pussymon (Dayxie) with 2 different evolution types that vary according to the day time. There will also be other new Pussymons to interact with, areas to explore, and so much more.

218.5K 58% 2 Flash

Lust Goddess: The Game (Sp0ns0red)

Assemble your unique squad of sexy mercenary girls. Earn their love and trust, and they will show you their gratitude by bringing your wildest and lewdest fantasies to life! Play Free Now!

6.2M 100%

Punyupuri SP

This is an exciting animated sex game from Tinkle Bell that features 4 main heroines to choose from. Each of these bishōjo has nice oppai and an insatiable drive to have sex, so don’t be surprised to see all of them being fucked by a tentacle monster in many different positions. This eroge explores all manner of sex acts including ahegao, paizuri, gokkun, and more, so there’s a lot to look forward to. You can click on the menu buttons to switch between poses. Just keep in mind that the game contains Japanese texts and sounds. It also contains few files so be patient while they are loading.

550.7K 69% 4 Flash

Bio Seeker: Scene 2 Mucus Parasite 1.01

This is the second part of the hentai game that follows the story of a girl who gets caught and trapped by a huge worm. And much like any worm creature, this one fucks and breeds with the female victim, so you can expect to see a ton of shibari, gokkun, and nakadashi scenes involving monster tentacles. If you watched the first part of this series, then it is worth a look. In this part of the game, you will get to see lots of animations from various angles and viewpoints. Hit play to discover what kind of twisted perversity awaits this bishōjo but here's a warning on slow internet connections causing long loading/waiting time between scenes.

252.4K 61% 7 Flash

Tripping The Rift: Six Satisfaction

Our heroine is a sexy beauty with a gorgeous body. She has it all in the right places. Her big boobs and sweet juicy ass are to die for and everyone wants to fuck her. The whole world dreams of how it would feel to fuck and suck those bubbly melons. Well, today we are glad to present you with a little sex game starring main characters from Tripping the Right. All you have to do is choose your favorite hero, do a little role play and bang our busty beauty really hard. She wants you and her pussy grip is crazy. However, try not to cum in her until the pleasure meter is full.

470K 71% 68 Flash

Stellar Dream [v 0.59]

If you love sci-fi games, then you are in the right place. Your task will be to find scouts who got lost while they were finding new planets suitable for human colonization. In their mission, they settled on three worlds. Your mission will be to try and contact the lost crew members while finding the best new home for mankind. Thing is, you are not alone. There are aliens and you need to find some common language so as to enter a treaty with them. What better language than sex? Fuck with some sexy aliens to reinforce the treaties. The fate of mankind depends on you!

267.6K 76% 36 Ren'Py

ROWL Fantasy Hentai

This is a fairy tale for adults, where some warrior came to the king with his girlfriend so that he would consent to their marriage. The king really liked the warrior’s girl, so he decided to retire with her and promised that her future husband would not find out anything. But the warrior found out about their romance. Watch what happens next and enjoy some nice sex scenes in this well-drawn sex movie.

269.6K 70% 8 Flash

Shelly's Future Past [Ep. 4.1]

This is a sci-fi erotic lesbian time travel adventure set in a futuristic world! Meet Shelly, a 23-year-old girl living in the bustling metropolis of Cyber City in 3077. She and her best friend, Triss, lead a life full of highs and lows. But there's something special about Shelly - a secret that's about to come out. One day, a mysterious woman from the future shows up, claiming to know Shelly. The stakes get higher when they discover that these men are trying to prevent the birth of five powerful non-humans who are causing an apocalypse on Earth. Get ready for a thrilling ride full of twists, sensuality, and challenges as these strong women fight for the future - and discover more about themselves.

16.1K 72% 1 Ren'Py

Candy Shop - Cotton Candy

Step into the sweet and steamy world of Bo-Peep's candy shop, where the sex experiments never end, and this time, you're in for double the fun! In this game, you'll meet two playful cotton candy girls who are ready to give you an unforgettable experience. Choose the sex scene you want to explore, and get ready to hit the action! By clicking the "HIT" button, you’ll guide the action and complete the scene in an exciting and interactive way. With each click, you get closer to the ultimate satisfaction, unlocking more playful and naughty moments. Dive in and see how sweet things can really get!

162.5K 56% 7 Flash

Impreg Defense

One more old game from NearFatal. It's a tower defense game where you have to complete 2 levels to see entire sex scene in theater mode. Place the tower on the strategically important spots. You need magic to build new and upgrade existing towers. You'll earn magic by killing sperm.

486.2K 62% 22 Flash

Advanced Rogue Intelligence Assault [v 2.7]

Your task in this huge game is to train your girls and discover all areas in the space. While you train, feed etc. girls you'll be able to get laid with them. That's a nice thing :) Attack enemies when you're ready. Follow in-game tutorial to see what's your real goal.

764.8K 66% 37 Recommended Flash

Stellar Incognita [v 1.0.0]

In this episode, you are transported forward to the distant year 3922. Humanity has advanced in technology and can now do various unimaginable things. Using our high tech, we can now travel around the galaxy and see what's beyond space. We can explore other milky ways and test out their planets. You will be playing as an artificial clone called Sagacious-6. You are quite smart and your artificial intelligence is next level. To top it off, you are quite self aware and thirst for more knowledge. So you start research forbidden technologies so that you can manipulate the minds of other clones to do whatever you want including having sex with you.

40.7K 64% 1 Ren'Py

Pussymon 13

Another new Pussymon episode and this one is titled, Greenrock island. In this new update, the game is more focused on the Brutemon Invasion, which should also continue in the following episodes. This time, the crew arrives on Greenrock Island to investigate the forest and find out more about the void portal. Along the way, you discover a small village that is filled with a ton of new Pussymons to catch. As always, you are accompanied by Bridget, Valentina, and a few others, so you can be sure there will be several sex scenes that include some hot oral, vaginal, and anal sex. Explore a ton of new features in this version that should make this one hell of an erotic adventure!

160.4K 58% 4 Flash

The Void Club Ch.4

Another new entry in the Void Club series and this time, you set off to recruit girls for your sex club from the Resident Evil: Nemesis universe. In this adventure, you will have to traverse and overcome zombie swarms, deadly viruses, and maybe even the Umbrella Corporation to recruit and bring back home as many cool babes as possible. As you can expect, you will get to interact with several characters from the original game including Jill Valentine, Miranda, and more. There will also be a few others from previous chapters, like Sylvia, Susan, Triss. Play on and overcome all odds to take your sex club to the next level!

247.8K 66% 15 HTML

Starwatch Academy [v 0.3.10]

This game takes place in the distant future. Humans have advanced and have figured out how to colonize space. During our travels we have interacted with various races. An elite space division was created to explore space and provide successful results. Our main character will be recruited into this division. He joins the academy with ulterior motives. He will not only conquer space but also fuck alien girls. Talk about sampling exotic babes and devouring their pussies. He will definitely have the time of his life. The sex scenes are quite impressive.

91.7K 62% 6 Shemales HTML

Aeon’s Echo: The Game (Sp0ns0red)

Dive into the enchanting world of Aeons Echo! As the protagonist, you will interact, bond, and evolve with various captivating goddesses. Enjoy an immersive role-playing adventure in a visually stunning universe. Play Free now!

6.2M 100%

Machou-Shoujo Misaki Mifuki

This is an adventure-action hentai game that explores a story about mysterious dungeon-crawling monsters and two hot girls who are trying to escape. But these beasts are not easy to hide from and to make matters worse, they are horny. As a player, you must do everything you can to help them find a way out, but you also have the choice to let them get caught and fucked if you want to see multiple intense scenes featuring ahegao, sumata, and nakadashi. At the beginning, you'll think that controls totally suck, but you'll learn how to handle them, so just check them carefully. Hit play and make your choice to either save them or let them get sexually ravaged in multiple ways.

439.4K 61% 11 Recommended Flash

Beasts of Our Beginning

This game takes place in outer space. The main heroine is this really sexy girl and she wakes up in a spaceship. She's stranded and doesn't know how she got there. Upon a closer look, she discovers that the spaceship has little fuel left. She thinks strategically and decides to head to a nearby goblin planet. It's not as grand as earth but it will have to do. She sets on a mission to look for her lost crew members. This is not an easy task to do but she perseveres and pushes through. She's on the run and some really bad people are constantly hunting for her. Your task will be to help her earn as many credits as possible. This is important so that she can pay off the loan shark that is after her. Of course there are other ways to get rid of the debt.

116.4K 52% 9 RPG Maker

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