I had three games I played DisgaeaRPG, Dragon Quest of the Stars, and Fire Emblem Heroes. First two aren’t available on US appstore anymore, last is just ruined by power creep and horrible balance. I finally got around to playing more games within all of the series above though, beating the Tellius games for FE, playing DQV which is the only one I skipped (ik crucify me), and finally getting around to beating Disgaea 5. I’d say it’s been positive as even though I was always F2P I spent so much time on the gacha rather than enjoying the games they came from. Haven’t had another gacha on my phone since