Just a heads up, there's a good review on the steam page that breaks it down a bit and it seems this is less a free game and very much a F2P game with a battle pass and expensive currency.
Play it. You never have to spend a dime. Its a great relaxing game to just fly around with your kids or something. The season passes net you like cosmetics that do nothing. You can get 3 for 15 bucks. What they get you on is the candle currency. Some of the items are like 150 candles and you aren't collecting that in a month without a serious grind. I still recommend it especially if you liked their other game, Journey.