Jump using the "S" key. Use left and right arrows to...well, that should be obvious. Don't fall. ;)
I made this game engine in part using logic borrowed from @Griffpatch. I may add a few more things to it in the future. You may notice, if you look at the coding, that some of it seems a little odd and unnecessarily convoluted. Well...sorry! To make levels, just add another "if level=var" and a few items to the blocks list! =) *****************Log***************** 11/20/2022: First commit. Not much here yet, just ability to jump and move around. Blocks can be built, so that's a plus. Only one size for blocks currently, may or may not change that. No way to "win" the level...and falling just leads to a restart.