RetroArch - Downloading and Playing Mr. Boom
This video demonstrates downloading and playing Mr. Boom, a new libretro core based on an old DOS-era clone of the Bomberman franchise. It supports up to 8 players and is a ton of fun.

Music is Etheross' "A Little Chiptune Can't Hurt Anyone"
Licensed Creative Commons — Attribution 3.0 Unported— CC BY 3.0 

NOTE: This game right now requires 2 players and/or more in order to play! No singleplayer yet, and no netplay yet! But netplay is what we hope to achieve soon!