The survival horror title is free to download for PlayStation Plus subscribers as part of this month's Instant Games Collection.
It is joined by bonus title Rock of Ages, which is free for four weeks as a PS Plus extra. It is also available for PS3 users for £6.49.
This week's update also features a demo for Transformers: Fall of Cybertron, ahead of its upcoming release.
Payday: The Heist receives the 'Wolfpack Bundle', which can be downloaded as an extra for existing users, or as part of a bundle for newcomers.
Max Payne 3 receives new characters and weapons, while Street Fighter X Tekken and LittleBigPlanet 2 welcome a host of new costumes.
Today also marks the beginning of the PSN Summer Sale, which includes discounts on titles such as L.A. Noire, Midnight Club and FIFA 12. The full list of discounts is yet to be revealed.
> Read last week's PlayStation Store update
This week's update in full:
PlayStation Vita Games
Payday: The Heist
Max Payne 3
Street Fighter X Tekken
PlayStation Vita Add-ons
Touch My Katamari
Watch a trailer for Dead Space 2 below: