If you’ve got a smart phone, download “Puzzle and Dragons” [sic]
You level/evolve monsters, build your teams, and match gems to power up their attacks. The special trick about this game, is you get to pick one orb, and you have a time limit to move it around the board to go for combos. I’m over 1000 days played on my main account, and there is still stuff to do each day. It starts out a bit slow at first, and there is a steep learning curve, but if you want a game that you can kill a few minutes a day, or hundreds and hundreds of hours in, give it a try.
mobdro.bio/ luckypatcher.tips/ www.kodi.bio/
As far as the IAP goes, the game hands out tons of magic stones, especially at first, and at least 1 a day, and that’s the only thing you can spend money on. You use these stones do a few things, but it’s mainly to roll in the machines for new cards.
If you do start out, and like it, you’ll want to look into the reddit, and look for help about re-rolling your account to get a good starter card, and keep these words in mind “only roll during godfest” - it’ll make more sense if you get into it lol. Feel free to message me for help!