Manic Miner (itch) (Ryan Nielson)

Manic Miner is a game about digging down into procedurally generated mines as quickly as possible, while making sure not to run out of air. There's no going back up, so you might as well go deeper.

Gameplay
Move the player right, left, and down to try to get as deep as you can before running out of air. Collect air bubbles as you descend to gain precious extra seconds to help you beat your previous high scores. You can't go back up, so make sure not to miss any air. Rounds are fast-paced, and difficulty increases the deeper you go.

Controls
Move: Left, right, and down arrow keys
X: Change color palette
P/Enter: Open menu