I'm a fan of traditional stick shooter + wave games. There's something with anticipating what's coming next, and the classic arcade feel of enemy hordes attacking you that I find satisfying. RED. is a new game from Knife Media in Cape Town, South Africa. It runs for $2.99 with a free trial, but that $2.99 is for both the Windows Phone 8 and Windows 8 versions. Buy once, buy everywhere. Shout-out for Windows universal apps!
RED. has some impressive 2D/3D graphics, comic book design and one hell of a sense of humor. Toss in some gratuitous gore, and I'll buy it.