I don't have any particular project in mind, but every BulletML game and many Danmakufu games are written this way. My favorite BulletML game is rRootage[0], but the scripts used in rRootage are procedurally generated combinations of scripts from other games, so they may not make good reading. I think Shiroi Danmakukun[1] features handmade scripts.
BulletML and Danmakufu's scripting language are not my favorite languages for other reasons.
[0]: http://www.asahi-net.or.jp/~cs8k-cyu/windows/rr_e.html
[1]: https://shinh.skr.jp/sdmkun/