Not F2P friendly while Dev telling players how they should play this game while making unlimited Co-op into time gated (which was main feature before recent update) Players rather to queue with random people as friends/clan isn't always online. Pity that such a decent game that Dev decided to milk it by making more inconvenience so people would give in to in-game purchase (which is ridiculously expensive to begin with for a TD mobile game) Remember players community is the backbone of a game!