Who knows, maybe he think there are peoples who joined in the project didn't finished their games and maybe to let them finish their project, the hoster of the jam gived more time to finish their project.
Viewing post in Way To Unlimited jam comments
Your game is not bad, but I felt difficult at first about the game. An example is the jump button. I thought w or up arrow key is the jump button. But I found space is the jump button. I actually felt hard to play the game until finish. So I didn't played the game until finish. Not a bad game in one room though.