Early computer games

Heres a trivia question: What were some of the earliest PC games and what were they like?
Jim
Jim

Flight Simulator and other chat
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I remember Pong, Space Invaders and Frogger. Loved Space Invaders and Frogger.
Does anyone remember Tron?
Mark
And then there was Star Trek. You wandered around the galaxy fighting Klingons, allocating energy to shields, weapons, etc and visiting star bases to refuel. Still text based but it adapted to your playing skill. The better you were the harder the game got. We decided that the game's goal was to beat you and, eventually, that's pretty much what always happened.