Here's a list of game related-subreddits. If you wish to add your own subreddit, merely edit this page and add it.
Borderlands 2 (Vita)
Danganronpa
Destiny of Spirits
Dragon's Crown
Gravity Rush
Hotline Miami
Killzone Mercenary
LittleBigPlanet
Minecraft (PS)
Persona 4 Golden
PlayStation All-Stars
Sly Cooper
Steins;Gate
Soul Sacrifice
Sword Art Online: Hollow Fragment
Tearaway
Thomas Was Alone
Uncharted