Commander X16

The inspiration for the year was actually the start address of Basic memory on the C64.

I wrote a text adventure. It's called Mars, 2049 AD, and it's available for Commander X16, among other platforms.

https://fredrikr.itch.io/mars2049ad

Note: Set the screen mode to something you like, before starting the game. I recommend using a mode which has at least 40 columns.

I just updated the Commander X16 version of the collection, to address a bug which would corrupt the game state after a reset or restart in Secret of the Knights and Sail with Pirates.

Ozmoo copies the entire state of the virtual machine to Video RAM every turn, This is an interesting approach, wondering why not banked ram? Faster to use VRAM because of the auto increment? Two reasons: 1: For a maximum size Z-code game, we're already using all of banked RAM. 2: Writing a block of...

RAM contents are generally preserved through a reset, and Ozmoo checks when it starts, if the game file has already been read into RAM. However, when resetting the computer, Basic writes a special value at the end of Basic RAM, so one or two bytes are changed. This turned out to have unwanted, albei...

We discovered another serious bug in Ozmoo on Commander X16: After restarting a game, or resetting the computer, game data in RAM could become corrupt, potentially breaking the game. Fixed in Ozmoo 14.51. Get it at https://github.com/johanberntsson/ozmoo/releases or use it online at https://ozmoo.on...

There is now a homepage for the collection, where you can also play the games in your web browser:

https://microheaven.com/gamebook/

If you've built games with Ozmoo before December 1, 2024, you want to rebuild them with the latest Ozmoo (14.48), as this release fixes a serious bug with overwriting savegames. I.e. if you saved to slot 1, then later you saved to slot 1 again, Ozmoo didn't remove the old save file, and when you res...

Updated the collection to the newest Ozmoo version. fixing a bug in overwriting savegames. Get the new version at the link above.

The game Adventure, AKA Advent, by Will Crowther is sometimes considered to be the first text adventure. It was first released in 1976. The expanded 350 point version, released by Don Woods in 1977, is also a classic. I recently ported it from Inform 6 to PunyInform, and built disk images for lots o...