Game is fun, but is completely ruined by the horrible LoL client
For me, this is definitely the kind of game where I like to alt-tab and look at other stuff. It's a great, multi-tasking, relaxing game.
The problem is, when you alt-tab and try to return, you get 10-15 seconds of a black screen as you and return again. So you're pretty much forced to just play this non-stop for 45 minutes or so.
I really, really hope they just release this on its own client like Underlords