The source code of VVVVVV is now public! https://github.com/TerryCavanagh/vvvvvv
It's pretty funny that MMMMMM https://www.increpare.com/2012/04/mmmmmm/ by increpare is missing from this list!I also enjoyed V https://gamejolt.com/games/v/27251 by Jay X Townsend as well.(I know I'm 9 years late to this thread, sorry!)