up 2 jump is reallly stupid I'm sorry. Pure platforms like Mario need 2 buttons like for speed running then jump.
Let me explain to you. You hold you left thumb where it normal goes (sorry)and your index and middle finger on A and B with your right thumb under controller (so sorry).
This is how to play pure platform. Later they evolve with super mario 64 analog and z b button etc.
very sorry but nothing on Amiga come near this. Dastardly makes a good listing but ultimate isthat Mario etc. will laugh.
Mario etc. is ultimate. Amiga with Prince and Flash has unique but always crippled. Why? One button and up 2 jump.