Disney has set their best-selling games for free on Windows Phone! I played through one of them on Android and it was pretty fun. If you "purchase" them now, you should then be able to download them any time in the future for free.
Where's My Water?
Where's My Water 2?
Where's My Mickey?
Wreck-It Ralph
Where's My Perry?
Monsters University
I've also set 6 of my own games/apps for free (Windows Phone 7 compatible!); they are not as good as Disneys, but should still be fun!
Portals 2D (puzzle platformer)
Stroids (arcade strategy shooter)
Blocktris (block puzzle game)
Squirrel (infinite runner)
OzBargain
TouchCraft (3D modelling app)
(They might still appear as paid for a little while longer, sorry! Just check back later :)
Thanks for these Op. downloading now.