Groovy MAME is also maintained and developed these days by Calamity alone, so it's CRT Emudriver's best friend. It's strongly recommended to read and broadly understand this tutorial for anybody not entirely familiar with the emulator, but keep in mind this is not Groovy MAME's official documentation. We've made this with two purposes - helping to get Groovy MAME working and properly configured as soon as possible for anybody with no deep knowledge of MAME itself and the technicalities involved in CRT Emudriver, and summarizing Groovy MAME's features from Groovy MAME's official message board, where they have been developed, explained, discussed and well, kind of lost due to that Site's nature.