Sweet & simple concept. Easy to understand which is a great achievement when it's your first game.
The progression could be a little faster, maybe you need only 20 for the first spin? Awarding points for close calls with seeds could be a fun addition and a good incentive to take risks (I'm not sure if this is in the game already, I could only do a couple of spins).
Great first game, all the best for your future projects!