Puzzle & Dragons is a huge game with a ton of deep mechanics, both in the preparation phase of play and in the actual execution. Virtually all of these kids are playing without paying a single yen, which is more than possible since this is actually one of the most generous free games I’ve played. This game has pretty well taken Japan by storm, causing teenagers to leave their handheld gaming systems at home in favor of their smartphones for perhaps the first time. Others, like Candy Crush Saga (Free), have a fairly simple premise that builds into something quite a bit more complex in the long run. Some focus on fairly superficial forms of collecting and/or building. When it comes to free games, you can find a huge assortment of varying levels of depth.
