Download this game by purchasing it for $1.99 USD or more. You will receive a Steam key with your purchase.
Included files
Oppai Muse - Windows (150 MB)
Oppai Muse - Linux (156 MB)
Oppai Muse 32-bits (147 MB)
Official Soundtrack (242 MB) at $3.99 USD
Support the developer by paying above the minimum price