Sonic colors (USA) does work! I used it with my EUR copy sonic rush inside the cartridge slot and the game works fine with MKDS as a donor rom.
P.S
1. The game still can't save but It works.
2. It has lags here and there.
3. Im not sure if a sonic rush donor rom (Any region) or sonic rush...
I've been playing fallout4 all day, I went into a elevator and it kept going, never stopped, waited 5 minutes, must of been a bug. How bout you, whatcha do today?