tinydash is a tiny terminal-based game similar to "Geometry Dash". It uses only standard POSIX libraries and can practically run on any system.
Build it with make, then run ./main. To play, press space to jump before the number symbols hit your character, the @ symbol.
If your character is at 1 row above the ground, you can press space again within the frame to double jump. You can press space while jumping to instantly go down.
Simply run make install. You need to be root.
You can increase the number of enemies to make it harder for yourself by compiling like this:
# $X is what you want the number of enemies to be
make CFLAGS=-DNUM_ENM=$X