"Platforming games that scroll from side to side, 2D platformers focus on horizontal and vertical jumping to reach an end goal."

I stole the definition from Glitchwave because I'm bad with words and didn't know how else to define what makes it onto this list. There's bound to be some grey areas here, though ultimately, this is my list and I'll decide what counts.

A few may be missing here that I've played just because I don't feel comfortable ranking them until I revisit them.