Dreamcast-Talk.com

Romrc:
game ms4plus "Metal Slug 4 Plus (bootleg)"
SFIX 0x20000
263-s1p.bin 0x0 0x20000 NORM
END
SM1 0x10000
263-m1_decrypted.bin 0x0 0x10000 NORM
END
SOUND1 0x1000000
ms4n_v1.rom 0x0 0x800000 NORM
ms4n_v2.rom 0x800000 0x800000 NORM
END
CPU 0x500000
263-p1p.bin 0x0 0x100000 NORM
263-p2.bin 0x100000 0x400000 NORM
END
GFX 0x3000000
ms4n_c1.rom 0x0000000 0x800000 ALTERNATE
ms4n_c2.rom 0x0000001 0x800000 ALTERNATE
ms4n_c3.rom 0x1000000 0x800000 ALTERNATE
ms4n_c4.rom 0x1000001 0x800000 ALTERNATE
ms4n_c5.rom 0x2000000 0x800000 ALTERNATE
ms4n_c6.rom 0x2000001 0x800000 ALTERNATE
END
END
Link: https://pyra-handheld.com/boards/threads/gngeo-rage2x-config-edits-additions.25393/

Honestly I am surprised it is even as playable as it is. Never thought this would be remotely possible.

Really very good im not allways believed it would work