This week's PlayStation Plus update adds BioShock 2 to the ever-expanding Instant Game Collection, making the underwater sequel free to download for subscribers following the upcoming PlayStation Store refresh.

Other bonuses for subscribers include a 10 percent discount on Rockstar Games Collection Edition 1, a bundle which includes Red Dead Redemption, Grand Theft Auto: Episodes from Liberty City, L.A. Noire, and Midnight Club: Los Angeles Complete Edition. The bundle usually costs $59.99, but Plus members can pick it up for $53.99.

Liquified puzzle game Puddle will also be 50 percent off on both of its release platforms, costing $5 for PS3 players and $4 for PS Vita players. It is not, as you might hope, Cross Buy-compatible, though that would be a sneaky workaround for saving that extra dollar. Check out PlayStation Blog for more on this week's update.