It is the third game in the indie Japanese studio's Infinos series of deliberately-retro throwback shoot-'em-ups, stylized after shoot-'em-ups of the early '90s (such as the R-Type and Gradius series). It features music from Hyakutaro Tsukumo, known for scoring music for the Thunder Force series.The game was later enhanced and released exclusively to arcades using exa-Arcadia hardware and a custom exA-Arcadia version of the STG Builder engine on February 20, 2020 as Infinos EXA. Hyakutaro Tsukumo composed new arranged tracks for the game's "EXA MODE" which features 2 new playable ships and a brand new game system focused on having full power ups from the start and shield that acts like a life bar. Using the upgraded custom engine, new features such as scanlines, 4K resolution and 1 frame input lag were added to the game.
