Moon Crystal uses a side-view perspective. The player advances through linear stages, overcoming obstacles, avoiding enemies, and reaching the end of each scene while the story unfolds through dialogue and animated sequences.

The hero can move, jump, climb or traverse environmental elements, and attack threats. Stages mix conventional platforming with chase-like sequences and hazards, so progress depends on timing as well as exploration. The game is structured as a story-driven campaign rather than a collection of freely selectable modes.

Learn the timing of jumps and movement before rushing through a screen. Many hazards are easier to handle by watching their cycles and moving only when a safe opening appears.

During chase and action scenes, keep moving while leaving enough room to react. Treat unfamiliar screens cautiously, and use attacks to clear immediate threats rather than relying on them as a substitute for careful positioning.