Thanks for your feedback. I made it like a normal game. It's my first Game Jam. Now I understood games must be made easy for quick play in Game Jams. I'll improve myself in the Next Jam.
Viewing post in The Key is in the Dice jam comments
Your game is very good for a first game jam!
I don't think you have to make it easy, you only have to balance the difficulty. I saw in another comment that you said the more you play, the easier it gets. I think it should be the opposite: easy to play but hard to master.
It's always a certain risk to offer a difficult game in this gamejam, because most people won't play your game for more than 5-10 minutes.
At the end of the day, I think everyone's goal is to create a fun game. Gamejams are there to test new concepts. Sometimes they work, sometimes they don't and that's okay! That's part of the fun :)
Next time, don't create "an easy game" because that's what works, create the game you want but make sure the first 4-5 levels are accessible, and gradually increase the challenge.