So far the games don't look too bad. Here's my first impressions of the ones I played so far.
Your doodles are bugged looks OK, but I think Crayon Physics is a lot more fun if you want to draw something. I get the impression that it's more for children
Saira looks like an interesting little mix of puzzles and platforming, but I don't like the controls, I think it should have allowed you to use the mouse in the interface, other than that it's not too bad looking. I might try it some more.
inMomentum, I find a bit frustrating. The gameplay feels like a mix between Mirrors Edge and Trackmania, but not in a good way. Might give it another shot but my first impressions aren't that great.
Zombie Shooter is a lot more fun than I though it would be, and I'm glad I bought the bundle if only for this. It's an isometric shooter with lots of zombies, lots of bullets and lots of blood. You level up throughout the game and you can upgrade your weapons and you physical attributes. Definitely going to spend some time on this one. My only complaints is that the Zombies are sometimes obscured by the walls, and they have really bad AI, even for Zombies, so trying to lure them into view can be tricky. Will give Zombie Shooter 2 a try now. It's about 50 times bigger than Zombie Shooter 1 so it's taking a while to download.