Dot.Run

You are a single green cell, dropped into the middle of a culture dish.

Everything pale and smaller than you is food. Everything that is deep red and bigger than you is your predator — and  the margin is always a sliver, because nothing on the plate is ever quite your size. You have sixty seconds to eat, grow, and reach the breach in the rim before the culture spoils.

Absorb anything paler. Anything deeper red absorbs you: growing changes both halves of that sentence at once. The HUD's *Outrank* counter tells you how many hostiles are still above you.

The amber enzyme roams the maze and cleaves hostiles: it is not yours to command and it does not care where you are. From the seventh arena there are two of them.

From the second arena, a pool forms somewhere far from the exit, and its mark names its boon: a silver broken ring cloaks you from every hostile. A cyan diamond lets you phase straight through bigger reds. A purple triangle summons a guide along the shortest path to the breach. A cobalt hexagon holds every hostile at half speed. Twenty seconds each, spent once used, renewed in the next arena.

Arenas grow to 21×15 and stop there. From the ninth level, enemies simply get faster.