Boom is a low-res remake of id Software's breakout FPS, rendered in 3D using the Game Boy's limited four colour palette for all in-game graphics. Everything is controlled using the keyboard, and you can switch between windowed and full screen mode by pressing the F4 function key.

The difficulty setting adjusts the damage you take for every hit and modifies the aggresiveness of the enemies as well. There are only two levels to play in total.