VVVVV was released during the initial wave of indie game popularity. It may not be the most influential of that group- but it's more relevant than it probably seems from a present day standpoint
VVVVVV has extremely simple and polished gameplay, what makes it interesting is how the same gameplay mechanic is constantly challenged and reinvented through very clever level design. It looks like metroidvania as far as exploration is concerned but is the complete opposite in general progress, as in the only thing that locks you out from an area is pure player skill, reinvesting what you learned to go further: "oh, you can do this" instead of "oh, I unlocked this and so can now access that".