Splashy Sub

Splashy Sub is an underwater adventure where you pilot a tiny yellow submarine through winding ocean caves. You must steer clear of rocks, mines and roaming sea creatures while collecting coins and staying afloat. A single tap or mouse click lifts the sub upward, and releasing lets it sink, creating a flappy‑style challenge. Every movement counts as you try to avoid crashes and survive as long as possible beneath the waves.

The game’s charm lies in its simple one‑touch control and fast‑paced arcade feel, making it easy to pick up but tough to master. Splashy Sub runs directly in any modern browser, so it’s free to play on desktop computers, tablets or smartphones without installing anything. Compete with friends or try to beat your own high score as the depth increases.