Heat Signature: A Top-D Space Stealth Game

heat signature was very much mechanics first because the idea of that game also came from Splunky. The central idea is you're flying around a tiny little pod and other bigger spaceships are flying around space as well. You can fly up to the airlock and dock with them and then you sneak inside and the inside of the ship is a level where you're hiding from enemies and trying to steal their key cards.