Magical Crystals is an arcade game released in various regions. While specific gameplay details are scarce, it's categorized as an arcade game suggesting a focus on immediate, action-oriented gameplay. The game's title suggests a theme of magic and crystal collection or manipulation, likely involving skill-based challenges. The release dates listed indicate multiple versions or releases across different regions over several years.  Further details about the developers or publishers would require more extensive research. The World versions suggest a wider international release than purely Japanese or region-specific titles.

Magical Crystals (World, 91/12/10)

Magical Cat Adventure