VVVVVV
Developed by Terry Cavanagh
About the game — TGN editorial note
VVVVVV is a puzzle platformer where you cannot jump; instead you flip gravity so Captain Viridian falls up or down. You guide the captain through over 400 rooms to find a crew scattered by a teleporter accident, and the game also supports levels made by players. It was created by Terry Cavanagh from Ireland, first built in Adobe Flash and released in 2010, and a later C++ port helped it reach many more platforms.