Open Redream and navigate to to select that folder.
Place your legally obtained MvC2 Dreamcast GDI or CDI file into a folder on your storage. Open Redream and navigate to to select that folder
If you want the most "original" arcade experience (the NAOMI version) or want to play online, Flycast is the better choice. Open Redream and navigate to to select that folder
Redream is widely considered the most user-friendly emulator for Android. It is highly optimized and often runs games at full speed even on mid-range devices. Get Redream directly from the Google Play Store. Setup: Open Redream and navigate to to select that folder