Trying to remember an arcade game

[Malak]

You went up a tower, it was a side scroller, you'd collect keys to unlock trapped fighters that could be ninjas or wizards or whatever, and they would follow you and level up their abilities too.

 

[Nohr]

Magic Sword?

 

[ImpulsE69]

I was going to say Black Tiger, but I don't think it completely fits your description

 

[Malak]

Magic Sword?

That's it thanks!

 

[Malak]

And I see it's on PSN which is even better, woot!

 

[Soundmanred]

Love Magic Sword.