I am in the process of preparing the next update of AROS Vision. I have permission to include the full version of Wildfire 7 and I got contact to the author of "Games Master System" and have permission to include it. It is really a great piece of 68k software.
I have just tested "The Game Extension" in AMOS that is based on "Game Master System". It supports AGA including Sprites and Bobs
To test it I wrote this short program that loads a IFF picture and waits till left mouse button pressed:
G Init Gms
G screen open 0,320,256,256,lowres
G Load IFF "clown.pic",0
G Wait Lmb
Opens AGA screen with 256 colors