
Screenshots

Watch trailer on Steam ↗OnlyDefense
Pipe Drainage · Published by Lewdonymous, Pipe Drainage
Content notice: Only Defense contains adult themes intended for mature, open-minded audiences. The game features strong sexual content presented in a humorous and exaggerated fantasy setting. Players will encounter graphic depictions of various sexual acts, over-the-top sexual innuendos, frequent nudity, and extremely saucy descriptions.
Last updated 9 Oct 2026
You play as Marty Clumsby who got far more than he bargained for. Cursed below the belt by mischievous fay magic, he must seek answers through visual novel-style encounters with strange professors and grow stronger by defeating lustful factions in wild, erotic tower defense battles.
Adventure, Indie, RPG, Strategy, Casual · 2026 · More free games
Join Marty Clumsby on his peculiar journey as he navigates strange professors and lustful foes. In OnlyDefense by Pipe Drainage, blend adventure and strategy to uncover the truth behind his curse.
About this game
Marty Clumsby has a cursed dick — and it’s full of dangerously powerful magical essence!
Life was already hard enough (pun intended), but now Marty’s erection has become a ticking time bomb... and everyone around him has "strange" ideas on how to help.
By day, Marty desperately searches for answers about his curse in a university full of suspicious professors, seductive classmates, and "helpful" counselors who may or may not want to milk him dry.
Every hallway hides a new awkward encounter... and some very tight challenges.
Build ridiculous towers. Survive seductive assaults. Defend your hard tower... or get absolutely wrecked.
By night, he’s pulled into a dream world where he must survive chaotic, sexy tower defense battles.
Armies of lustful factions: orc warrior queens, horny witches, cumthirsty cumpiresses, and mischievous fey are desperate to drain the magic straight from his cock for their own twisted purposes.
In return, if he wins, his skills improve and he gets better - both by day and night.
Branched Narrative: Choose your adventure in hundreds of choices, open map, and more than 200.000 words of branching narrative
Tower Defense: Build towers and cast spells to fend off 5 lustful factions determined to milk you dry in total of 20 levels (100 waves) of ridiculous enemies
Quests: Uncurse your dick through more than 50 hilarious quests, side-quests and events to progress, unlock animations, meet new characters, and win your secret crush
Ridiculous RPG: Improve your stats, collect bonuses, and roll the dice to test your skills
Meet 15+ characters including your secret crush, dominant queens, cursed witches, thirsty monsters, and more
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Defend your load. Resist the pleasure. Save your heart.

System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Processor: Intel i5 or AMD equivalent
- Memory: 4 GB RAM
- Graphics: Intel Iris / AMD Vega or equivalent
- DirectX: Version 10
- Storage: 500 MB available space
Recommended
- OS: Windows 10
- Processor: Intel 7th Gen or AMD equivalent
- Memory: 8 GB RAM
- Graphics: Nvida GTX Series 10 or equivalent onboard
- DirectX: Version 10
- Storage: 500 MB available space
Supported Languages
Latest news
AnnouncementsOfficial
DevLog #4: Demo Updates – July 2025
Hello to all the Defenders (and assorted pervs)!As promised, we'll keep adding new things to the free demo as we grind our way to the full game.New big things (aside from Marty's hehe)The main menu (your in-game mobile) got a major makeover! Everything now runs on sexy new "apps" and the hottest of them all is the TitCock social platform!Through TitCock, you can check on Marty's stats as they develop, but let's be real, more importantly for all you pervs out there, you'll be able to stalk (follow) your friends (daytime characters) and foes* (nighttime). As you play the game, the app will update with all the characters you meet, and more importantly (for all the pervs out there), you can replay all the saucy illustrations you unlocked through dialogues, whenever you're in the mood for a little... inspiration. (We know you want to)*Foes are cumming in the next update. We promise it'll be worth the wait 😏💦Other Tasty UpdatesBackground improvements, with new animationsUpdate to the school mapVarious minor bugfixes and tweaksSave CompatibilityYour old saves should work, but because of new variables and conditions, it's possible some things won't update as intended. If something blows up, please let us know.What's NextWe're getting closer to the first taste of the full game, and for those of you who can't wait to see what's cooking, we have some plans to let you taste the game early. To get more info about this, join our Discord so you don't miss a thing!Send nu-(khm)... feedbackGot a filthy idea for the next mobile app? Found a bug? Want to request some dark fantasy? Wanna hang out? Write to us and we'll se what we can do!Stay hard and wet Defenders! Good things are cumming! -- devs, xxxRead full article on Community Announcements (cumuluspuffy)AnnouncementsOfficial
Only Defense Devlog #1
Thank You AllRead full article on Community Announcements (Leeroy Jenkic)Patch NotesOfficial
Demo rebalance and bug fixes
Greetings, Defenders!Based on feedback and comments, we balanced the game, fixed some bugs and hope this patch eases the access of the Demo for people!✨What's new:More explicit illustrations are now animated!More animated BackgroundsQuest descriptions in the quest logSkill checks can now be rolled on the 'Spacebar' button! You still need to make the choices via mouse click, but we're working on that too.🏰Tower Defense got a revamp!Opponents have been rebalanced slightly.Opponents now provide more Essence. Juicy!Towers scale more noticeable with Marty's attributes.Two currencies: one for building, one for keepingThis means that you'll keep all the earned money, but will not carry the starting essence to the shop.You'll have to arouse your enemies to get that sweet nectar!Global buildings like the Cauldron of Climax and Grand Arcane Orgium can now be build a specific number of times during the TD Mini-game for further optimisation.Players can now see how much Essence they will carry over to the shop! A visual indicator is present!Death animations are now played for every opponent who is slain!🐞Bug FixesCertain bugs that impacted the gameplay have been fixed!All Character SFX are now influenced by the settings slider.Music sliders in the options now work as intended and carry over from scene to scene!Dick Gobbler's shop visual bugs are fixed! You can now bask in all her glory!Music transitions between scenes are now fixed.🪩DiscordWe're actively discussing and sharing new stuffNew channels, improvementsSharing the art and loveConsider joiningThank you all for playing our Demo and on your feedback!Stay hard and keep it cumming, Defenders!-devsxxxRead full article on Community Announcements (cumuluspuffy)Patch NotesOfficial
Day 1 patch is (a)live!!
Hey there pervs,First off, thanks to everyone who's played the demo, wishlisted, or just added Only Defense to their library. Means a lot. Here's a saucy gif as a token of gratitude:So... We had one super-busy day fixing a shitton of fixes, some were big, many were small, we hope we didn't break something else, but it's possible, that's game dev.FixesNow when that that's out of the way, here's what we fixed:Some broken animationsLocation backgrounds not working as intendedRare dialogue bugs where a dialogue would lead to a wrong branch, or if it would break and lead to where it shouldn't. The game has a lot of text and branches, so it's hard to keep it all in check.Some tower defense issuesSave / load issuesMinor quality of life tweaksSome graphics improvementsNew icon - hey, you can't say it's not pretty!So, what's next?The demo will stay yours forever, no rush. We will update it as we develop the game further, but the scope of the demo will not change, as it's already about 1-2 hours of normal playtime.We will continue to work on the rest of the game. We plan to release it until the end of the year - sooner the better, but we can't make any promises yet.There's a lot of dialogues and quests already written - more than 7000 lines so far - that's about the size of a regular novel. The full game will be at least 4 times the size of the demo.Expect many more perversions and animated sex scenes, as the demo is only the warmup.5 faction leaders with 4 levels with 5 waves of tower defense, and about 10-15 buildings to buy and upgrade. We don't aim for the grind, instead we want to be more generous and make you feel more powerful as you progress.We want to make all kinds of accessibility features, localizations, etc. but it will all depend on the game's success, and that's where you can come in!We want to hear from youWe are making this game because we love making games, and we're having a lot of fun with this one. But we also want to make a game that people will enjoy, s...Read full article on Community Announcements (salvage.cooperation)







