Am I the only one who thinks
Super Hexagon and
VVVVVV have quite a few things in common?
To begin with, "
Super Gravitron" - "
Super Hexagon".
Second, there is the number
6.
VVVVVV: Six crew members, six colors, six levels, etc..
Super Hexagon: Six-edged polygon, six stages (point, line, triangle, etc.), six difficulty levels.
Maybe 6 is Terry's lucky number.

And actually, I wouldn't be surprised if both games took part in the same universe.