5 stars: It's not that hard to make a good tower defense game. But as far as I can tell these are the first guys to do one right for mobile. Encompassing all elements of types of grades and mazing, difficulty scales beautifully and there's a freemium option for noobs. Well rounded and recommended
3 stars: Edit: ok, got it. I should be clearer, the "relic" tiles look a look like the normal unbreakable ones. Cannot collect relics. The encyclopedia doesn't help to know HOW to collect them. I assumed you had to build a turret on top of relic parts, but this never got me any.
3 stars: Fun until it gets gimmicky. Too many TD games suffer from that problem. Sad to see this is one. Invisible enemies, immunity to traps, enemies that destroy your towers...there are ways to make a game difficult without cheap gimmicks. And the ooze enemies are totally overpowered. Forced to use diamonds on almost every level in Chapter 4. When I ran out, I uninstalled. I'm not going to pay to win.
5 stars: This is a great game. Graphics are a little lacking, but the gameplay makes up for it. There's a lot of content right off the bat as well. It could use a bit more difficulty, but it's still ok.
3 stars: Single player is great. Survival is extremely disappointing. You can only get a few waves in before the green bastards come in and destroy all your towers. If you survive them you have nothing left for the next wave.
5 stars: Great game! It's difficult to find those nowadays. Ho...