[quote][b]Posted by:[/b] Fredfredbug4 I think its bassed of the halo 2 engine since there is only a minor change in graphics[/quote] Game engines don't build up graphics. The models and textures are stored elsewhere. So while although they may of used the same models, simply revamped, they most definetely did not use the same game engine that they did for Halo 2. If they had, Halo 3 would be an extension to Halo 2 rather than a full new gme.