Several years ago I made a remake of one of my favorite childhood games. It uses the graphics and music from the Turbo Grafx version, and as such is probably all sorts of illegal. Thankfully nobody seems to have noticed or cared.
The game can be downloaded here. Some people have reported trouble running the game in 64-bit environments though. If you are one of those unlucky people, you can try downloading this patch, which will replace the EXE file (you still need to download the game in the first link).