Gem Mania

You control a little creature, maybe a snake or a worm, that grows longer with every gem it eats. You move it with the arrow keys, weaving through the level to collect every gem placed there. The main goal is to clear all the gems without running into the walls or, more critically, into the growing trail of your own body. As you progress, the layouts get more cramped and the paths more convoluted, forcing you to plan your route several moves ahead. The pace is methodical, not frantic; you have time to think, but a single wrong turn ends the level. It feels like solving a spatial puzzle where you are both the solver and the constraint.