GameTree Online, the digital distribution arm of software developer TransGaming, now has the Mac OS X versions of the epic RPG Dragon Age: Origins and the strategic shooter Star Trek: D-A-C available for purchase.

Dragon Age: Origins puts players in the role of a Grey Warden, one of the last of an ancient order of guardians and tasked with uniting a shattered kingdom and destroying the dragon Archdemon. Along the way, players must make tough decisions, such as whether or not to sacrifice others for the greater good. Players can customize their characters in various ways, including the choice of one of six origin stories, and can choose from more than 100 magical spells and abilities.

The game is available as a standard or deluxe version – the latter offers a collection of wallpapers, in-game bonus items, the game’s soundtrack and a new adventure called Warden’s Keep.

Warden’s Keep allows players to use two of six new abilities and features Soldier’s Peak, a fortress overrun by demons and offering new adventures. The standard and deluxe versions of the game also include The Stone Prisoner, with more environments and items, along with a powerful stone golem who can join the character’s party, and Blood Dragon Armor, a set of themed armor.

The standard version of the game is US$49.95 while the deluxe edition is $64.95. Dragon Age: Origins may be the first game to require Snow Leopard: system requirements call for Mac OS X version 10.6.2, an Intel Core 2 Duo processor, 2GB RAM, 17GB of hard drive space, and an ATI X1600 or Nvidia 7300 or better video card.

Trek

Star Trek: D-A-C (Deathmatch-Assault-Conquest) supports online multi-player, online co-op, and single player action between Starfleet and the Romulan Empire, with support for up to 12 starship captains.

Four game types are included: Survival, a single-player mode in which Starfleet captains must blast through waves of enemy ships while grabbing power-ups and taking care not to lose all three of their lives; Team Deathmatch, pitting teams against each other in winner-takes-all battles; Conquest, in which teams protect and conquer control points in space; and Assault, where teams take turns attacking or defending an area of space.

Each side has five types of ships available: missile cruiser, support frigate, bomber, fighter, and flagship. Each offers strengths and weaknesses as well as unique capabilities. The Starfleet flagship is, of course, the U.S.S. Enterprise.

Star Trek D-A-C sells for $9.99. System requirements call for Mac OS X version 10.5.8, an Intel Core Duo processor, 2GB RAM, 450MB hard disk space, and an ATI X1600 or Nvidia 8600 GT video card or better.