English is a bit difficult for me
hi and thanks for the interest in the jam. You can make the game in Spanish but you will be limiting the number of people that can play it and review it.
other better options are:
i talk portuguese but i have affinity with english because when i was a child all the games was not localized on portuguese, then i pushed myself to undestand what is said in all dialogues and menus.
if you want to develop games, english is required! My suggestion is to you push yourself in all this 12 days of jam to learn the english you need on your game, because you´ll need it in every game you´ll develop.
Because the game is community judged, and this is a primarily English-speaking community, you CAN make the game in Spanish but you have to recognise that many people who will judge your game will have a hard time doing so.
I agree with Redefine, it might be a better plan to make a game with no language and teach the player through symbols.