This is a garry's mod gamemode called Bomberman which I made in about 24 hours. It's an arcade-like kind of gamemode, based on the old classic Bomberman flash games.
This gamemode was also running at CG for a weeks or so, but I don't have the motivation to polish the gamemode up.
The gamemode is currently playable, but it is more of a proof of concept and needs more polishing.
I'm releasing the gamemode publically and allowing anyone to modify it, as long as they give me credit for the original gamemode.
Download link:
http://puu.sh/1Ng5z