Automatically discovered as an actively maintained fork of Butterscotch (ButterscotchRunner/Butterscotch). PS2SP only auto-adds a fork when its default branch has commits ahead of the registered parent, one of those fork-specific commits is newer than 180 days, and the fork has at least one published non-draft GitHub release.
Tracked upstreamgithub
Butterscotch-MiyooCFW
🥧 An open source re-implementation of GameMaker: Studio's runner (YoYo Runner), targeting Undertale v1.08 (Bytecode Version 16) for MiyooCFW devices
Latest releasev1.3.0
Release dateApr 7, 2026
Source activitySep 22, 2026
PS2SP updateApr 7, 2026