When do you use 'på' and when 'i'? Are there any helpful rules please?
I would also like to have this answer please
What is the exact difference between 'spille' and 'lege'?
This post might help
Why not leger?
You need to be more consistent or flexible. Sometimes you accept spiller for play and sometimes you accept leger, but there is no consistency.
Kids running around the park playing free would be leger. But since it's men, it's probably an organized game or sport and so you use spiller.
So if it free play(ie. running, climbing, jumping), its leger. If it an organized game, the spiller. Tak for hjælpen!