I might make a cartridge with programmable logic in it one day. It will be able to emulate various types of bankswitching.

Happy birthday, Willrandship!

You can make custom level packs The structure of the appvar is pretty straightforward. Because I ran out of time there is no built in level editor, but I will release one if people are interested in making their own level packs.

I knew ET was on there somewhere but I did not know it was on that bank.

Edit: I wrote a batch file which automatically loads games from the cartridge and plays them with just one click. You can also drag a rom file on the batch file and it will write the file to the cartridge (only works with a special multicartridge)

I am going to reset my calculator and fill it up with awesome new games! Good luck to the other contestants!

I found quite a lot of bugs.

You can climb up walls by jumping.
The enemy sprite disappears at the edges.
2nd makes you fly. Is that supposed to happen?
The projectile fires in the movement direction instead of the direction the player faces which is annoying because the player has momentum.

These are all relatively easy to fix though, so that should not be a problem.

There you go:

Get a repair disk/windows live cd and do a chkdsk to check for disk errors.