21+

The best price for 21+ is $0.56 at GameBoost. That is 43% less than on Steam, where it costs $0.99. 2 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 21+ 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 21+ are: Windows 7, 512 MB RAM, 500 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.

No. 21+ is a single-player game.

Yes. 21+ is the full base game. You need nothing else to play it.