Hi, kind of everything is in the tittle, it's my first game jam, so do you have tips ?
For this one specifically, I'd recommend going through Mark Brown's backlog of videos. The topic will be based off of one of them, so it'll give you a bit of a headstart when the jam begins. When it starts I highly recommend visiting the Discord as you'll be able to find constant support during the jam there. Don't be afraid to post screenshots, gifs, and prototypes to get feedback while you're working and to constantly reiterate on your core design. It's really easy to get sidetracked and focus on extra mechanics and unnecessary clutter if you don't remind yourself of the pitch. Stick to the pitch. Keep the pitch simple. I like using something that I would tell a friend about a game I like; "It's a rouge-like deck building game with perma-death." or "It's a puzzle game where you can change the rules by pushing text blocks around with your character." I hope this gets you started, and best of luck in the game jam!
To add on the pitch thing: the more of a mouthful the game is to describe in a single sentence like EATARI did, the more time it will take to make. Don't worry too hard about conveying intention or rules. Cheat if you have to by throwing everything in the manual, assuming that isn't part of the challenge/theme :P
Here are some general tips. Keep in mind that I'm just a humble game designer. I'm not claiming to be an expert on the topic, and I want you to treat these more as guidelines than as rules. If anything I say strikes you as just flat out untrue, then feel free to ignore it.
If you've ever played Darkest Dungeon, that's pretty much how game jams go. The same strategies apply.
Anyway a more useful tip:
Personally I think my best tip is to just be sure to eat. My first game jam I didn't either eat or sleep. You need to do one of those to stay awake. It's better to sleep on purpose with an alarm and get back up than to fall asleep on the spot or let your brain get to a non-functional state. Just getting some food, especially if you can walk there to pick it up, will really help keep your brain working while you hammer out code for your overly ambitious project (not a slight, I just don't think there's ever been such a thing as a properly-scaled game jam game). If you have to pick one, I would say choose food over sleep. Both keep your brain working, but you can eat while you work, or take a food break with your team to discuss next moves, where everyone's progress is, and what features might still need cutting. Taking a break to discuss with your team helps keep everyone's productivity up and results in better cohesion in the actual game, so if you can do that while walking down to a nearby pizza place or corner store, that'll get everyone awake and with enough blood sugar to power through the crunch period at the end.
Yes, you could just grab a snack bar, yes you could get a pizza delivered, yes you could eat it while working, but I highly recommend using this as a team meeting, and, time allowing, walk to pick up the food to get everyone's blood pumping. Think of it as a sort of 'party buff'.