Sony has revealed what North American PlayStation Plus owners can expect to receive this week. Â The free game for this week is the PlayStation Network title, Closure. Â Closure is a unique and stylistic puzzle platformer that takes the concept of light and shadow and twists it up into something never before seen. In Closureâ€™s dark and foreboding universe, the only things that exist are what you can see. An object properly lit up is physically there, yet an object shrouded in darkness ceases to be. In addition to getting Closure for free, the following titles are on sale this week: Critter Crunch – PS3 – $1.40 (normally $6.99) Alien Breed – PS3 & Vita – $7.99 (normally $9.99 Derrick the Deathfin – PS3 – $4.00 (normally $7.99) NHL 13 – PS3 – $38.39 (normally $47.99) What do you think about the PlayStation Plus update this week? Â Tell us in the comments section below.