[A] and [D] to move left and right, [W] to climb up steps.

[S] to pick up/drop blocks.

[Enter] to make selections or to reset the room.

[F] to toggle fast movement (helpful for longer levels).

Music is: Butter Building by Lofi Lia

Based on Block Dude for the TI-84 by Brandon Sterner.

(Currently a demo, "Original" levels are the same as "New".)