Cassette Beasts is an open-world RPG where players record monsters onto cassette tapes to transform and gain their abilities for turn-based battles. The game's core mechanic is the Fusion System, allowing any two recorded monster forms to be combined into unique new ones. Players explore the island of New Wirral, utilizing monster abilities in human form for traversal and puzzle-solving, and engage in a deep battle system that leverages elemental interactions. The game includes local and online multiplayer for cooperative exploration and competitive challenges.Bytten Studio developed Cassette Beasts, which sits as a debut title for the studio. The game emphasizes its unique transformation mechanic, where players record monsters onto cassette tapes to adopt their forms and abilities in combat. The Fusion System allows for significant strategic depth by combining any two monster forms, creating distinct visual and mechanical outcomes. Players can also form bonds with human companions, which impacts the effectiveness of fusion during battles. The game features modes for local and online co-op and competitive play, including trading tapes and facing powerful Rogue Fusion beasts.