People are saying as if all arcade game allowed you to credit feed or if you can credit feed the game might have a check point system in which it brings you back to, or if it allows credit feeding it may disable it at the last stage.

Making a blanket statement as if all games are designed the same way.

I've been playing and getting better with Rastan. I've finally beat it with credit feeding, and I want to slowly get to the point in which I get the 1CC run. On the other hand you cannot credit feed the final stage so I at least did that once. I need to iron out my strategies go defeat the stage 3 and 4 bosses, they're the most troublesome. I managed to beat the final boss within the first attempt.

There are other games I want to play as well, like Joe & Mac, and WipEout Pulse. Maybe do the arcade version of Galaxy Force 2 since I've beaten the Genesis version.