[shurcooL]

I would call that very suggestive, not explicit.

  > Take an existing game or game jam entry on GitHub, fork it and do something awesome with it.

Consider the edge cases:

What if you can't fork it because you've already forked it 5 months ago (but made 0 commits on your fork)? This is probably okay, right? If not, you could delete your existing fork and fork again.

What if you can't fork it because you have an unrelated repo with the exact same name already? This is also okay, right?

What if you can't fork it because it's your own repo and you don't need to fork it? This is not okay? Or is it okay? No clear answer.

There are times where it helps to have explicit rules/conditions.

[lambda]

Dude, it's not like there is major prize money involved.

This is just a "just for fun, do something cool by forking something that already exists and we'll show off the best."

Relax, have fun, make a cool game.