TSB07 is a compilation of official levels for the Marathon series of first-person shooter video games created and published by Bungie for the Apple Macintosh in the mid-1990s. This compilation was developed and released by Ducco Ventures in 2007 and is exclusive to the Macintosh platform. The compilation contains the game’s original levels pack, eight new levels, and several bonus materials, including cheat codes, soundtrack recordings, and screen savers. An additional level set, "Marathon Enigma," is included and features levels designed by fans of the series. TSB07 is designed to update the original released levels for modern computers, making them more compatible with Mac OS X. The compilation includes enhanced graphics, improved level designs, and a user-friendly GUI. The title is available for free download through the official website.