This is Radical Rat, which unfortunately is nowhere near the level of completion I intended due to Real Life (TM) getting in the way...
Right now there is nothing but some pretty graphics, coarse FM sound effect (that fails on real hardware due to ignoring YM timings), a cool options screen that shows the graphics of the controller you have attached (currently only SMS, MD3 and MD6 buttoner). Options don't make a difference yet.
Gameplay part is not worked out yet nor the cutscenes. There is only forward scrolling with realtime stage data decompression, and basic multipart sprite you can move around a bit. On real hardware you can see flickering lines on bottom of screen showing how long do some parts of code take.
There is also a PSG envelope generator but it is not in functional state anymore when I began adding FM stuff to the sound framework.
Graphics is drawn in MS-Paint and converted for use on SMS with my GFX converter and optimizer. Stages are created with my stage editor and music would be made with SMStrk which I am slowly working on. It makes sound but does not make music...

Changes :
*Added SDSC header
*Added fixed point player movement
*Added gravity
*Added basic ground colission detection
*Added simple jumping
*Attempted to Fix FM problem on real hardware but it did not work...