OK game, but some pretty big issues. First, it was really all based on luck in later screens. If ou weren't close to a Fuel pick up, you couldn't get it and in the later rounds, you might only get 4 or 5 real shots at fuel and you need them all. But to make it worse, the sprite boxes were off. I can't count how many times I ran right over a pick up and didn't get it as well as how many times I clearly was to the right of an enemy and it registered as a collision. Clearly the game considers the player to be several pixels to the left than what we see.