Yeah. I remember playing New Super Mario Bros and having a blast with it. Then I played nEw Super Mario Bros 2 and New Super Mario Wii. They are literally the same fucking game and it's kind of ridiculous.
There are tonnes of music levels in Rayman. At least one for each world, and they're all fucking amazing.
And you're right. F2P MMOs get a bad wrap, but they've given me tonnes of enjoyment. I adore Tera Online's PvP. Planetside 2 is great. Hearthstone is the best game I haven't paid a cent for. Actually it's one of the best games full stop. Free to Play is pretty dang awesome.