The title features two player couch or online co-op throughout the main game mode, with each player controlling one of the two initial characters: Nina and Ace. Both characters have their own unique movesets and weapons, and additional characters can be unlocked by completing certain objectives in the game. The console versions of 20XX will also include two characters that were released as DLC on the PC, Hawk and Draco.

The game has been in development since 2013 and draws strongly from the Mega Man X series of games. You play as a spunky little robot with an arm cannon that makes her way through procedurally generated levels to fight the boss bot at the end. The biggest difference is that the powerups you'll pick up along the way are random as the title has some "rogue lite" elements to it. The other big difference? You can do all of this with a friend.