First console game, a bright yellow Pong console. It played pong, tennis (pong with a smaller paddle), and hockey (pong with two small paddles.) It had controls for two players and three difficulties which changed puck/ball speed. My father had just taken over his father's part of the auto parts store and a salesman gave it to him as it was originally supposed to be a contest but none of the owners had bothered to sign up to win the damned thing.
First computer game, a racing game on the Radioshack Color Computer with 4k RAM. Had to type in the whole program every time, and at least half the time the tape immediately stretched so that one had a file name with no program body and a program body with no file name - both utterly unusable. When it did work it was one centered rectangle which could be moved up or down and other rectangles moving right to left at different random speeds, representing overtaken racecars which had to be dodged. The entire controls consisted of moving the car up or down on the screen.
First PC game, Rogue, in sixteen glorious shades of amber. I wore out three floppies playing that sucker.