On the Overview page, there is written:
"You can create a full game if you desire, but only the boss will be judged."
But when I want to submit my game it reads:
"No full games, unless the game is entirely bosses."
I created a game with 4 rounds, the 4th one is the boss. I'd consider it a "full" game. I'm going to submit in anyway, I worked really hard on it.