Maybe one of the first examples of a risk-vs-reward mechanic in a video game. Fuel canisters serve two purposes. You can either fly over them to gain more fuel which you'll need to continue playing. Or you can blow them up for extra points, though this prevents you from getting fuel. Do you risk destroying the fuel to gather up more points and hop you can fill up when the next rounds come along? Or do you play it safe and try to keep your fuel as high as possible at all times? I'm amazed because this is the most I've thought about anything when playing these old ass Atari games