I made the Newgrounds logo in MS Paint with just black and white. I might make an alternate version using two shades of grey to make it smoother.

I'm working on a Pokemon-like game with my own pixel art from scratch, featuring many important/popular people from Newgrounds (along with some other people/groups I respect or am associated with). I wanted a pixel version of the Newgrounds tank as part of the intro screens, so I made it.

Anyone's free to use this however they want (unless the Newgrounds staff says otherwise since the tank is their design). It would likely fit nicely in the preloader for any sprite movie/game.