Undertow: The Abyss

Something is sleeping at the bottom of the abyss. The gems are piled around it. Tap to descend, ledge by ledge. Every gem you grab makes you richer — and wakes it a little more. Swipe up to climb. Reach the surface, and everything you carry is banked. Or push one ledge deeper. When its eyes snap open, you get one instant to dodge — and then you'd better start climbing. It remembers how deep you've been. Get caught, and everything you carry is gone. The game will show you exactly what you left behind. HOW IT WORKS - One thumb. Tap = descend and grab. Swipe up = climb. - Make it back to the surface and every gem goes into your Vault — a treasure room that fills up, run after run. - The eyes are your only warning. Climbing calms it. It never forgets how deep you went. - Get caught and your run's haul is gone. Your Vault is safe. Forever. WHY YOU'LL STAY - Runs last a couple of minutes. Restarts are instant. - Two records to chase: deepest descent, and biggest single-run haul. - Rarer gems live deeper. The best loot sits right next to the thing that eats you. - A daily descent objective, with a cosmetic to try when you clear it. FAIR BY DESIGN - Free to play. No forced ads, no interruptions — one optional rewarded ad can salvage part of a lost haul. That's it. - Optional cosmetic items only (gem skins, abyss themes, rope trails) — nothing you can buy changes gameplay, gem values, or your odds. - No account, no login. Your hoard lives on your device. How deep will you go?