Pulstar as said earlier.
Magician Lord.
Nam 1975.
The main reason I'm asking is because I picked up Robo Army the other day and finished it in like a half hour! I was kind of looking for a little more bang for my buck.
EDIT: Their suggestions mean nothing until you change your approach.
It's too bad this type of game never evolved, the game sucks, yes we all know that but seriously though, the gameplay had something going on, that hole 2 button system for the boxing was pretty cool, a very rare beat 'em up. I'm one of those guys that grew up on Kageki, so I'm a big fan of the system, however this time Joe took it a step further by implementing a brawleresque (What a word!) motif. If someone where to take the system, add to it and keep the boxing/fist fight premise I think we got us a freaking BOMBAH!Legend of Success Joe.
That game keeps me coming back, even after all these years.
Yeah I should have elaborated a little. I finished the game with 4 credits. Not a total domination but it was still kind of a breeze.Did you beat it clean in half hour? I'll admit I'm not the biggest fan of the game, it looks better than it plays but then again it's an oldie, it has its merits...the real thing is...you're in for a surprise then 'cause most arcade games can be beaten in half hour.
Edit: Damn it Panda, beat me to it...