Kill Knight and Wizard of Legend

Games about fighting in little rooms.

Kill Knight

You are a knight armed with a sword and guns who drops down into some randomly generated tiny arena to see how many monsters you can kill. Time your dodges, sword the baddies to get more ammo, and obliterate them with your ultimate skill once its charged up enough: basically the more you kill, the stronger you get. Alas it doesn't look like there's much else happening in this game which just expects you to button mash the boredom away. Not recommended.

Wizard of Legend

You are a wizard invited to the Chaos trials which consists of randomly generated areas that you need to get through to become a Wizard of Legend. In it you'll run into shops, mini bosses and of course - rooms that lock you in with a variety of bad guys that you have to beat to advance. There's more customization from the get go than Kill Knight, but the controls aren't very good (though to be fair, BOTH games recommend using a controller which I did not). Even if they were it would suffer from the same problem as Kill Knight though, which is repetitiveness. If you want a better version of both these games, play Hades instead.