Drop a rotate-and-thrust ship down a winding cavern while gravity pulls you toward the rock. Gun turrets on the ledges shoot at you, fuel cells wait to be beamed up, and at the very bottom sits the pod. Hold your shield next to it and it hangs from your ship on a rigid rod — it swings, it has weight, and if it brushes the walls you crash. Haul it out through the cave mouth to win the level. Shoot the reactor to silence the guns; wreck it and you have ten seconds to escape for a big bonus. Free, no sign-up — play right in your browser.