This sub-directory details projects which have been archived, retired, or discontinued.
- Kade Engine - A legacy engine that includes new features and quality of life fixes, targeted at pro rhythm game players.
- Officially deprecated by the author.
- Forever Engine - An archived rewrite of the game, originally written by Yoshubs. Includes performance reworks, HScript support, and more.
- Officially deprecated by the author.
- Mic'd Up Engine - A deprecated engine that features revamped menus, additional difficulties for base game songs, endless mode, and modifiers.
- Deprecated due to lack of updates.