This is a fun little puzzle game similar to the Zuma series. There's a chain of marbles across a path and you have to match 3 or more of the same colour to get an effect (damage, shield, heal, reflect, boost). It's really enjoyable for the first few hours, with the exception of losing certain matches because you get the wrong marbles (usually when you can get 4 different ones. And don't even bother with the absurd optional boss battle, which is 95% luck, 5% skill.

However, the game becomes prohibitively difficult around halfway through (level 46-47). At this point losing to chance became to frustrating for me and i quit. So it's a recommendation, but only if you get it on sale or in a bundle.