This little Shapes Shuttle allows users of M1A1 for the Mac to update their M1A1 Shapes file with a Moonscape landscape. This will fill an unused landscape slot in the M1A1 Shapes file and will thus not show up in-game. However, custom maps for M1A1 will be able to utilize the new texture. Hi-res versions of this texture are available for the SDL version in the Marathon Revival Bonus Pack found at orbitalarm.bungie.org (but these may also work with the Mac version - untested).