Infinite Interactive's addictive puzzle RPG Puzzle Quest is this week's Xbox Live Marketplace deal.

Effective immediately, Puzzle Quest: Challenge of the Warlords has been marked down to 400 Microsoft Points ($5) for Xbox Live gold members. The sale will run through next Sunday.

As if the impending arrival of Puzzle Quest: Galactrix didn't post enough of a threat to your free time, TransGaming has brought the addictive puzzle-RPG series to the iPhone.

Priced at $9.99, Puzzle Quest: Chapter 1 - Battle of Gruulkar is the first in a trilogy that splits the Infinite Interactive-developed, D3Publisher-distributed original Puzzle Quest: Challenge of the Warlords into three parts for the iPhone and iPod Touch audience.

The iPhone version replicates the gameplay found in the beloved original, requiring players to juggle various RPG-style quests while trying to fight monsters and earn experience, mana and more by matching three or more orbs of the same color.

The subsequent two entries in the trilogy will allow players to carry over their characters from the first game, and are said to be "coming soon to the App Store." As an added bonus, gamers can back up their saved game on TransGaming's servers for free.

The 67.7MB game is now available through iTunes, with a direct link available here. Thanks to shacker mattfl for the heads up.

Infinite Interactive's addictive puzzle-RPG effort Puzzle Quest: Challenge of the Warlords will receive a downloadable PlayStation 3 release this fall, publisher and studio owner D3 has announced.

The PlayStation Store version will bundle the original Puzzle Quest, along with the Revenge of the Plague Lord expansion, for an undisclosed sum. The original game initially sold for $15 on Xbox Live Arcade, butdropped to $10 prior to the arrival of the $8.75 expansion pack.

The PlayStation 3 marks the last major console to receive Puzzle Quest, with the game having already hit PC, PlayStation 2, Xbox 360, Wii, Nintendo DS and PSP. PS3 owners can already buy and download the PSP version from the PlayStation Store, though they must transfer it to a PSP in order to play.

A sci-fi sequel, Puzzle Quest: Galactrix, is expected to release on PC, Xbox 360 and Nintendo DS early next year.

D3Publisher has announced that the previously announced expansion for the Xbox Live Arcade edition of Infinite Interactive's puzzle-RPG hybrid Puzzle Quest: Challenge of the Warlords will hit this Wednesday, July 23.

Entitled Revenge of the Plague Lord, the expansion includes four new Hero professions—Bard, Rogue, Ranger, and Warlock—alongside 25 new quests. New monsters and bosses, 50 new spells and 40 new items are also arriving as part of the expansion.

The expansion will be available for 700 Microsoft Points ($8.75) when it debuts on the Xbox Live Marketplace this Wednesday.