Running Optcarrot, a Ruby NES emulator, at 150 fps with the GUI! TruffleRuby runs Optcarrot, a NES emulator written in Ruby, at 150 fps while playing a NES game. As we can see in the GIF, performance gets better as we play and the JIT kicks in. We start with 2 fps and a fairly laggy game in level 1 and end up at 150 fps with a very responsive game in level 3. The Optcarrot benchmark Optcarrot is a