PlayStation Store Update: Stacking vaults onto PSN

Leading the pack this week on the PSN is Double Fine's Stacking ($15). The game is now available to download and follows the story of Charlie Blackmore, the smallest of a family of Russian stacking dolls, as he aims to reunite his family after they become separated in the wake of tough economic times. The game's puzzle element involves stacking the dolls and making use of each one's different abilities to overcome challenges that often have multiple solutions. Players will unlock more dolls as the game progresses and Charlie's story unfolds.

Also out now is Explodemon ($10). From Curve Studios, the platforming title has players vaulting into the shoes of the "ultimate badass exploder dude" Explodemon and trekking through 12 distinct levels filled with secret areas, puzzles, and deadly traps.

Gamers who would rather eat humans can purchase and download Tales From Space: About a Blob ($15) today. Available last week to PlayStation Plus subscribers, the title is now available to all PSN users. As for the title, About a Blob is a puzzle platformer that casts players as a blob, an alien creature embedded on Earth to eat the entire population.

The last title arriving on the PS3 storefront this week is PopCap's Plants vs. Zombies ($15). The PS3 version of the famous undead strategy title has players defending their home from a swarm of undead attempting to break in. The title boasts a two-player versus mode, as well as a cooperative experience.

Traveling back through time, Sony added three new PS One Classics to its download space this week, the first of which is Capcom's fighting title Pocket Fighter ($6). The other two nostalgic titles now available are Reel Fishing II ($6) and Natsume's Harvest Moon: Back to Nature ($6).

Music gamers have a bevy of options to choose from this week. Def Jam: Rapstar adds songs from T.I., Digital Underground, Far East Movement, and F.L.Y. Guitar Hero: Warriors of Rock welcomes the February Mega Pack, which bundles songs from Marilyn Manson, Black Label Society, Children of Bodom, and Firewind. Lastly, Rock Band 3 adds eight new Bob Marley jams.

A full list of the week's deals and new PlayStation Store content, including themes, wallpapers, demos, discounts, and add-on content, is available on the PlayStation Blog.