Firstly, bravo to Itch.io for including accessibility criteria that can be searched on.
Unfortunately for the one button area: https://itch.io/games/accessibility-one-button - far too many people misunderstand what a one-button game is. The section is jammed packed with inaccessible games for many one-switch / one-button players.
It should be possible to start, play, and restart using one-single button. Nothing else. No mouse pointer movement. Nothing.
SPACE BAR / LEFT-CLICK / PRESS-ANY-KEY / CLICK-ANYWHERE..... but no need to move the mouse pointer once you start the game. Is there any chance this can be made clear to people who keep labelling their games incorrectly?