Rock Runner

Info

8-way scrolling game for the TI-99/4A.
Goal: collecting diamonds in a 2D world.
Simple physics: gravity, lava, bombs, butterflies,...
Written in TMS-9900 assembler.
Development tools: line-by-line assembler, hex editor, Mini Memory module, tape recorder.
Used a novel undocumented half-bitmap graphics mode of the TMS-9918A Video Display Processor.
Program code fitted in 4K of memory.
Distributed by Asgard Software.
Now open source on Github.