I feel like we need a better name for this genre, as describing games like War is Peace: Card Defense (Free) as a “card battler RTS hybrid with MOBA elements" really doesn’t flow off the tongue (or keyboard) very well. Either way, these sorts of games seem like the might be the Next Big Thing™ on the App Store, which is A-OK by me as I think the gameplay formula works really well on mobile.
Anyway, in the game you put together a small deck of various futuristic military units, then engage in battles where you’re dragging those cards out and dumping them on to the battlefield. If it sounds a lot like Clash Royale, well, that’s because it’s definitely in the same ballpark of this sort of game. What sets this one apart is it has an actual single player campaign, and the setting us a much darker post-apocalyptic world over the Clash of Clans-y universe of Clash Royale.
Considering this game is actually available in the US App Store, I’d say it’s definitely worth a try particularly if you’ve never played one of these before. The developers are active on our forums, although in the thread someone afflicted with the Game Center bug is having problems playing, so, hopefully you haven’t been bit by that yet.