For mobile games, I'm more into this game called Final Fantasy Brave Exvius. Reminds me of the old style RPG games. It's quite addicting, and you can still have a lot of enjoyment without paying any money for their gem/lapis system. However, lately they've been really pushing people toward spending more gems in order to be successful with their weekly events...however, it's all up to the individual. If you play it just casually, it's a good game - but it's easy to get sucked into trying to being a completionist with the more difficult trial events and you feel more and more pressured into spending lots of money on the game.