The Game: Why is it that, when aliens invade the Earth, you’re the only person on call? Doesn’t the front office have a more recent phone list? At any rate, wave after wave of aliens attack, dive-bombing you repeatedly and – providing you don’t blast them out of the sky – rejoining their formations to attack anew. These aliens are a particularly nasty breed, as they can fire while diving and retreating. If you can clear the screen of extraterrestrial nasties, the invasion begins again. Are you getting overtime for all this alien-blasting? What are the benefits like? (Nintendo, 1980)
Memories: A pretty obscure entry from Nintendo, this 1980 rip-off of Galaxian adds some cool touches, such as the odd perspective which barely hints at 3-D, and the turning, tumbling alien ships. When one considers that Zaxxon was at least two years away with its primitive (but at the time impressive) isometric graphics, Radar Scope‘s obscurity is not well-deserved.
To add insult to injury, Radar Scope bombed in the arcades, nearly bankrupting Nintendo’s fledgling American operation. To make ends meet and to use existing stock, Nintendo’s next coin-op – which would make or break the company in the American video game 
market – was designed specifically to be inserted into repainted Radar Scope cabinets.
Nintendo’s next game? Donkey Kong.