#22 Teamfight Tactics
This is the game I currently spend most time on. It was not the first auto battler I played, I had played the Dota 2 mod, the stand alone Dota underlords and the auto chess game from the original developers of the Dota 2 mod. But none of them hold up as high to the excellent Teamfight Tactics set in the League of Legends universe.
Frequent set updates and gameplay modifications keep it fresh again and again. Just enough luck vs strategy to make each win feel like you mastered it and each loss as a fluke. The mobile version is so well done that I prefer that over the pc version. I can see myself play this game for the upcoming 10 years.