One of the better digital puzzle games that are out there. Yes there is a lot of DLC, but there are almost 100 puzzles that are offered for free and through in-game currency, plus monthly challenge puzzles every single month.
I don't even mind paying money for the DLC as they usually go on sale for at least 75%-90% off during the big holiday sales. Plus I know I'm getting my money's worth for the time invested.