I don't want to give too much away just yet, but I will say that this game engine, although based on the original MSR code, is much, much more capable than its predecessor. Moving NPCs, sprite masking, map depth, ledges, split-party gameplay, and auto-movement are all new features to the game engine. Environmental hazards, weather effects, stealth missions, switch-puzzles, and other such good stuff also exists. Basically, everything I wanted to include into MSR, but couldn't because it didn't match the original design, is included in MS2.