Back2D

Back2D is a platform game where the player controls a caveman (though the game has a bizarre, convoluted sci-fi backstory detailed in the intro.) On each level the player needs to collect all the hearts to advance to the next. Gems can also be collected to gain "health", with 100 units of health giving an additional life. Touching an enemy or spikes instantly takes away one of the player's lives; no weapons of any kind are available.

A level editor is provided with the game, to create custom levels that can be run from the game's main menu.