How do I create a 2 player game?

I was wondering for a new game, how can I do a 2 players game like, on the same device? One will use the arrow keys and another A W S D, for example.

For Platform or 8-Direction object, disable standard controls.

Use events like:

Is key A down - > Player1 Simulate pressing Left

Is key Left down - > Player2 Simulate pressing Left

etc.

Cool thanks