Too many tiles. Only 7 spaces. I'm at level 385 and have 37 tiles. It's impossible to finish a game without spending 100+ coins per game. I really, really enjoyed Zen Match until now, but it's just not fun anymore. I would be willing to keep going, keep buying coins and watching the ads, but the fun is gone because of the huge number of tiles. It's anything but "zen." Poor design at the upper levels. I do not recommend this game.