Claim: Halo Online is a free-to-play first-person shooter that was heavily modified version of Halo 3.
Evidence: The game is based on a heavily modified version of Halo 3, optimized to be run on lower-end PCs. Halo Online is a free-to-play first-person shooter developed by 343 Industries and Saber Interactive, and published by Microsoft Studios and Russian publisher Innova Systems.