so, over the years i've played far too many arcade games to list them all, but as the OP asked for early stuff, some other early units i loved included
galaxian - loved this game because i was so much better at it than i was at space invaders, and it was in colour, possibly the first colour game i played.
phoenix - loved that game, having to shoot holes through the mothership, can still vividly remember the tune.
moon cresta - can remember the imense pleasure i felt first time i managed to dock all three parts of the ship together for a super firepower machine, only to be devastated ten seconds later when i crashed it into a green squiggler.
scramble - i remember this game as being the first arcade game i ever played on a table top machine (in a pub called the Navigation i think, which in those days was a place people drove out to for a few pints with the kids on a sunny sunday)
boot hill - i remember this as the first simultaneous 2 player game i ever played. very basic graphics and gameplay, not much more advanced than pong to be fair.
more if i remember them.
oh, and this thread has reminded me that i must one day get around to finishing my mame cab
