If you own the game and need to access version 0.3.7 specifically (for example, for mod compatibility), you can use the to download older builds: Baldi's Basics Plus on Steam
version 0.3.7 was a minor update released in May 2022 that primarily fixed control and cursor issues. While the original Baldi's Basics Classic is free to download, Baldi's Basics Plus is a paid Early Access game typically priced at $9.99 . Official Purchase and Download Baldi’s Basics Plus Free Download v0.3.7
You can download the game legally from the following official platforms: : Available for Windows, macOS, and Linux. If you own the game and need to access version 0