BurpSub: Underwater Adventure

Control a round fish with air and burps in BurpSub. Manage buoyancy, open valves and reach the exit of each underwater mission.

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Hold Gulp Air to fill your fish's belly and rise. Hold Burp to release air and sink. The air already inside keeps affecting your buoyancy after you let go, while your changing size and momentum shape how you move. Small, well-timed adjustments help you stay clear of the cave floor and ceiling as the current carries you forward.

Burping also creates pressure waves when you have enough air. Use them to open marked valves, take on enemies and defend against incoming shots. Open the required number of valves, navigate the cave and reach its exit. Every twelfth mission ends with a deep-sea guardian, giving your buoyancy control a different kind of test.

Travel through coral gardens, kelp mazes, wrecks, glowing reefs and deeper waters. Warm, frost and echo bubbles change your pressure waves, while pearl shields and current boosts help you handle dangerous passages.

Features:
- 180 missions in 15 underwater worlds, including the expansion.
- Two-button control built around air, buoyancy and momentum.
- Pressure-wave attacks, valves and four enemy types.
- Special bubbles, pearls, powerups and 15 boss battles.
- Five lives, checkpoints and up to three stars per mission.
- English and German interfaces, music and sound effects.
- No ads.

The first 12 missions are free. A one-time full-version purchase unlocks the main adventure through mission 120. A separate expansion adds 60 missions in five more worlds and requires the full version. The expansion has its own progress and can be started as soon as both purchases are unlocked.

Take a gulp, time your next burp and find a safe route through the depths.

Recent changes:
BURPSUB is ready to dive! Explore fascinating underwater worlds, navigate tricky obstacles, discover exciting challenges, and enjoy a colorful submarine adventure!