Nokia also offers Words with Friends and Draw Something for free to Lumia users
Update: Users are reporting download issues with Draw Something and compatibility. Your mileage may vary.
Nokia had originally offered Draw Something recently to Lumia owners but the game was quickly pulled for what seemed like connection errors. Now that game and its companion, Words with Friends, have both returned to the Nokia Collection.
Interestingly, both games are completely free though these do have ads to cover their costs. That differs from the games we covered here last night, which will run you $2.99 to play but do not have ads.