PlayStation on Twitter: "PlayStation Plus update: http://t.co/cS11MPkeNg Limbo free for members, Battlefield 4 (PS3) trial, new discounts http://t.co/Kp4QBlEEk6" / Twitter
1080p Limbo Hits PS4 - GameSpot
Limbo PSN & Steam Release Dates Announced - Video Games Blogger
LIMBO
Limbo, Skullgirls Encore and more join PlayStation Instant Game Collection in May - Polygon