Free-to-play may not be the complete and total future of video game distribution, but many indicators point to it being a very important part of it. What's your favorite game you've played that you didn't have to pay to download?

I nursed a temporary Candy Crush addiction, and I enjoyed my time with the game. I also had good times with World of Tanks on Xbox 360, and the time I spent with Tribes: Ascend and Path of Exile.

What free-to-play games have you enjoyed? Which would you call your favorite? Dota 2? League of Legends? Hearthstone: Heroes of Warcraft? Dungeon Keeper? Let us know in the comments below.

For some suggestions of quality free-to-play games, head here and here.