Abyss Glow

Keep a small deep-sea fish glowing by eating golden plankton. Its fading light reduces visibility while jellyfish make the descent dangerous. A single held input raises the fish, and releasing it lets the fish sink. Light acts as a continually shrinking survival resource. The creator describes both reduced visibility and faster sea movement as the glow dims, so ignoring food makes later navigation harder.

Hold the movement input to rise and release it to sink. Eat golden plankton to renew the fish's fading glow while weaving around jellyfish.

Hold Space, the mouse button or a touch to swim upward; release to descend. P pauses; M toggles audio.

Prioritize plankton before visibility becomes too limited. Use short rises and descents to keep a manageable route between hazards.

One-input vertical swimming Fading light and reduced visibility Golden-plankton recovery Jellyfish hazards Depth-score challenge