Congratulations on the release, and welcome to the scene! It's great to see another team bringing the TMNT arcade game to the Mega Drive. Running the arcade game and translating the hardware on the fly is an ambitious approach, and getting Stage 1 playable on real hardware is a real achievement.
I'm also working on an arcade port for the Mega Drive (a different approach, built from scratch in SGDK), so I know how much work goes into this. The more people keep this game alive on the console, the better for everyone who loves it.
Good luck with the next releases!
