Thanks @ixien for posting up Captain Blood, I very much enjoyed the challenge of converting that to gx4000 and getting the save/load working. Although I never played the game as a youngster I really like its open world style and graphics, I think I would’ve really enjoyed it.
Having now converted a few games for gx4000 I thought I would write up a bit of a guide, as the one that does exist is a bit limited and outdated. However having written the first section I found it was getting a lot longer than I originally intended and has only scratched the surface. It’s over here Converting games for GX4000 - How to/FAQ ; if anyone is interested I am happy to write more.