we used to have one of those early game systems where you had to buy a cartridge,those games were soooo expensive....remember Maze and the one that was like ping pong,god we thought they were the best thing since sliced bread lol.....and lets not forget Space Invaders.
I played the hell out of Space Invaders! I used to get $10 in change every weekend when i was younger and I would go to the local Pizza and Arcade and just blow it on space invaders..
Took me a lot of chores to get that $10 too.. lol