I'm currently working on Henry Hatsworth in the Puzzling Adventure. It's a cool cross between a platformer and tetris attack which is pretty addictive and quite difficult as well. I'm really enjoying it so far!
That game... I did the entire first world no troubles and was like "Huh...this games a bit too easy..."
Then I got to the second world and instead of coming out of every level with 2-3 lives more than I started with I found myself with a net loss of 1-2 lives a level
I'm actually still working on beating that game, I just don't play video games that much