Bubble Sub
Tap to dive. It floats back up. Thread the rock gates.
How to play
Pilot a little submarine through an underwater tunnel. Each tap is a short dive, and the sub floats back up to cruising depth near the roof on its own. Every gap in the rocks is deeper than that, so you have to time your dives to meet each one. Bubble vents push you up and undertows pull you down, so ride them. Air pockets pay extra. Hitting a rock, scraping the roof or scraping the seabed is a bump, and three bumps and you are done. Tip: tap once or twice to sink to the gap, then let the sub float.
Controls: tap to dive