I’ve mostly played arcade games for variety rather than mastery. I didn’t put “lots of money” into any one, and my dad quickly got us game consoles and computers rather than taking us to arcades to dump quarters per play. The ones I remember putting the most quarters in, I don’t even remember all of them or their names off-hand, but Joust, Defender, Ikari Warriors, Bosconian, Berzerk, Robotron 2084, Venture . . .
Most arcade games are designed not to really be finish-able.
Terminator 2 probably has a limited amount of scripted content.
I think Gauntlet has 100 designed levels, but if you complete them, it starts flipping those maps for later levels, and I read that if you get to 999, the next level is 8, or something.
How high a level have you reached in Gauntlet?
I kind of hate Gauntlet because it’s so much about endurance, and it lets you put quarters in to keep playing when you die, so any competent player could get to level 100, if they put in tons of quarters, and IIRC (?), you can’t really get good enough to not have to keep putting in quarters. And the gameplay wasn’t that interesting. So it seemed kind of like a pointless endurance money pit, to me.