Splashy Sub

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Splashy Sub is an endless underwater runner where you pilot a small yellow submarine through narrow cave passages. Tapping or clicking lifts the sub upward; releasing lets it sink. The goal is to travel as far as possible without clipping the cave walls, hitting mines, or colliding with sea creatures drifting across the path. Coins scattered through each run can be collected along the way, adding a secondary objective to the pure survival loop. The controls feel deliberately floaty, which is where most new players struggle — the sub does not stop moving vertically the moment you release, so anticipating the drift is the core skill. Mines require early course corrections because reacting at the last moment rarely works. Sessions are short, often under two minutes until you build a feel for the momentum. It suits anyone who enjoys simple one-input games with a steep learning curve hidden under approachable mechanics. Experienced players will find a rhythm that makes longer runs feel fluid.