There is no Steam version of I--- Musumaker as of 2026. Any listing on Steam is a different game.
Users often confuse with Umamusume: Pretty Derby , a popular horse-girl training game by Cygames that released in Japan in 2021 . i--- Musumaker English Free Full -2021- Version
The year 2021 was a watershed moment for the game’s English community. Prior to 2021, translations were either machine-translated gibberish or covered only 30% of the game. The so-called "2021 Version" refers to a specific patch released by an anonymous team known as (a pseudonym for a now-defunct group). There is no Steam version of I--- Musumaker as of 2026