Initially envisioned as a vertical-scrolling shooter and intended to be their last game, "Progear" was created by CAVE as a collaboration with Capcom and served as their first horizontal-scrolling shooter title, with bullet dodging and enemy destruction being the main focus while adapting the company's shoot 'em up gameplay style in a horizontal format but faced a problematic development cycle before its launch to the market. Though first released in arcades, the game was later ported to mobile phone platforms, each one featuring various changes compared to the original version and has since been re-released as part of the Capcom Home Arcade plug and play game system.