52 developers give 100 iOS/Android games for free (topigames.com)

Is there any must-haves in this collection?

I like the idea but the webpage needs a little work, when you hover over a screenshot it covers up the next one entirely so it's difficult to view them in succession.

I thought Versus Maths was Race for the Galaxy for a second and got really excited.

Generous of them, but to be honest, I'd be amazed if any of the games in that list weren't already free.