"Gem-crazed monsters are on the loose, and it’s up to you and your legendary skills to blast them away in this unparalleled tower defense game, Gem Keeper.
With 14 unique towers and 30 thrill-powered stages, Gem Keeper challenges your gamer skills to the max. Scheme, strategize, and dare to achieve the ultimate ‘Perfect Clear’.
The game doesn’t end there – compete against your friends (and the world) in Endless Mode, and show them who’s number one.
+ 3 gorgeously crafted themes
+ 30 individual levels (x3 if you count the difficulty settings)
+ 14 unique defense towers
+ 22 different enemies
+ 4 ultimate boss enemies"
Source: The Developer Website.