Short, fairly easy, clever puzzles. No glitches except some of the puzzles have to be done a few times before they 'take'. I find this a lot in FEG's games lately..it's frustrating because you think you did something wrong when, in fact, you had it correct!
I get that ads are necessary for free games, but FEG uses 3 types in each game..the worst are the pop-up videos. Then there are regular full screen ads, along with the standard banner ad. I think the banner ad alone is enough.. apparently FEG doesn't agree 👎🏼