It involves an archaeologist character loosely based on "Indiana Jones" venturing into an Egyptian tomb in search of treasure. He has to avoid all the nasties that he meets there including bats and snakes and mummies. The distinctive feature that I remember most about the game was that your character could only fire on the horizontal. This meant the game required some strategy and timing when taking on the baddies. I thought this might also simplify some of the problems of making a game in Basic, as I would only have to work out firing on the horizontal. I had also made a Q-Bert game, in which I had included a snake character, so I thought it would be easy to make an animated snake. I also had used a fly in my Frogger game, which with a little tweaking, would make a nice bat.
The Coco version (JGGAMES.zip) really flies with the double speed poke, although the Dragon version was a little sticky in its key input until Zephyr helped me out with a "speed keys" routine for that computer (archive.worldofdragon.org). I have to admit that another inspiration for the game was seeing a game called "Pyramid" for the NEC PC-6001 32K. I was exploring the NEC PC because it also uses the Motorola 6847 VDG graphic chip. I was hoping to find inspiration for some games, or possibly even some code for porting. One of the things I found was a YouTube video for Pyramid.
I also have made some other discoveries for programs to port to the MC-10 (and the Coco and Dragon). One of these is NukeWar. Although I found graphic images for games, I found it impossible to get at the original code for the NEC PC version. I just can't navigate the language barrier to get a working emulator, and no one is simply posting the code directly on-line. However, once I saw the images, it did make me aware of games that could possibly be ported to the screen size of the MC-10. One of these was the Avalon Hill simulation NukeWar, which I stumbled across a NEC PC image for.