ABYSS.IO — Underwater Evolution

STAGE 1 Reef Sprout

Tiny Blue Fish

HEALTH 100

HUNGER 100

EVOLUTION XP 0 / 80

SCORE0

TIME0:00

EATEN0

TOP OF THE REEF

ABILITY Bubble Boost SPACE

MOVE MOUSE / WASD · ABILITY SPACE · TRIDENT CHARGE SPACE · SHOP B · PAUSE P · SOUND M

Sunlit Shallows

MONSTER GATE20:00

STARVING — FIND FOOD

Eat. Evolve. Rule the reef.

Start as a tiny blue fish. Graze on glowing plankton, dodge the big ones, and climb five original forms on your way to becoming the Apex of the reef.

YOUR NAME Swims above your fish · you can change it any time

ACCOUNT LOCAL TEST MODE

Playing as a guest. Your run is saved on this device only.

? - LV 0 0

Local test account - kept in this browser only. It is not registered with any online service yet.

CRYSTALS0

TOTAL XP0

EVOLUTIONS1

CURRENT FORMTiny Blue Fish

SKINS0

PETS0

RUNS0

BEST0 XP

Cross-device sync is not live yet. When the account service ships, signing in with this username on another PC restores the crystals, evolutions, skins, pets and XP held here.

HOW TO PLAY

Mouse / WASD — swim and steer (arrows work too)
Space — unleash your species ability
Eat anything smaller than you; flee anything bigger
Fill the XP bar to evolve automatically

YOUR BEST RUN

No runs yet — the reef awaits.

Original fish · Original art · Runs in your browser · No install

TAKING A BREATH

PAUSED

The current is still. Your school waits for you.

YOUR NAME

Press P to jump back in

THE DEEP CLAIMS ALL

SWEPT AWAY

A bigger shadow got the better of you.

FINAL FORMTiny Blue Fish

SCORE0

FISH EATEN0

SURVIVED0:00

Best run — 0 XP

CURRENT MISSIONS

Three goals, refreshed every 12 hours. Collect each one for XP and up to 100 crystals.

MISSION CHESTS TIME LEFT 00:00:00 0/5

THE REEF AT A GLANCE

Every depth band, the sites you have charted and the missions waiting down there.

OPTIONS

Everything here is saved on this device, or on your local test account when you are signed in.

SOUND

MISSION ALERTS

PANEL MOTION

ACCOUNT Guest — this device only

MISSION RESET Every 12 hours — missions cannot be rerolled.

Rewards are held locally. Online vaults arrive with the account service.

THE ARMOURY

Everything you buy is kept on this device, or on your local test account when you are signed in.

ABYSS.IO ACCOUNT

Welcome back

USERNAME PASSWORD

Local test account. Your password is never stored — only a random salt and a stretched digest stay in this browser, and nothing is sent anywhere. Online registration is not live yet.

Create an account

Reserves your name for the day cross-device sync arrives.

USERNAME PASSWORD CONFIRM PASSWORD

This is a temporary local test account on this PC. It is not a secure online registration, and it can be lost if the browser storage is cleared.