-> https://github.com/richard42/dynospriteDynoSprite is a sophisticated, object oriented game engine for the TRS-80 Color
Computer 3, written in 6809 assembly language. The build system runs on a
modern computer to compile, assemble, and package a final disk image which can
be loaded into an emulator or copied onto a physical disk for running on a real
CoCo 3. The resulting CoCo program requires a 512K Coco 3 with a disk system
(either 5 1/4" floppy drive, or CoCo SDC card, or CoCoNET ROM Pak, or similar).
Maybe portable to Dragon, too?