I'll have to look into Batari Basic, I'm assuming its not far off from just assembly. I'm sure it wasn't easy to crank out a whole game in 48 hours that runs on such ancient hardware.
Viewing post in Platformer but you're the platform jam comments
Actually, Batari Basic is very easy, but due to my currently limited skills, ancient hardware limitations, not having the whole time due to religious reasons, and not going to ruin my health and/or risk anything near submission time plus possibly other things, it turned out to be this (though I can be lazy sometimes as well). Actually, the jam caught me during a time where I was figuring out what to make with more complex art and stuff, so it took away the chance of me being able to make a game with better visuals though if it was later maybe it still would have been looking similar to this.
Here's a link to the IDE and potentially something in Batari Basic: 8bitworkshop IDE