Lust Theory
Offers
Trailers & screenshots
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About Lust Theory
Lust Theory puts you in control of a man living with three women. You go to school, do chores, study for college, play games and watch TV, until the same day begins repeating. The time loop lets you spy on, tease and have sex with the characters.
Gameplay
The game includes free roam, a time cycle and an in-game hint system. You can define your relationships, revisit sex scenes, change image angles and enable Nude Mode. Interactive sex scenes are called “Lust Time.”
Content and features
- Over 11,300 images
- Over 280 animations
- Full voice-over for all female characters
- Sound effects for animations
- Steam Achievements and Trading Cards
Frequently asked questions
The best price for Lust Theory is $9.47 at Gameseal. That is 47% less than on Steam, where it costs $17.99. 3 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and Lust Theory stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for Lust Theory are: Windows XP, Intel Core 2 Duo, 4 GB RAM, 4 GB storage. It also runs on macOS. The recommended specs are in the System requirements section.
No. Lust Theory is a single-player game.
Yes. Valve rates Lust Theory as Verified on the Steam Deck: it runs well out of the box.
Buy Lust Theory 47% cheaper than on Steam.
Lust Theory is available for 47% less in shops such as Gameseal or Gaming Dragons.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.











