Rayman Legends is one of the greatest 2D platform games ever released, and an essential Steam sale pick-up if you've never played one of Ubisoft's best. It's been free on and off over the years, but the 2013 game is still worth it at a big discount, so please pick up Rayman Legends if you haven't.
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Free games: One of the best 2D platformers ever is free-to-keep from Ubisoft
Free Games: Rayman Legends is free on the Epic Games store
Rayman 4 will be great so long as it remembers the series' secret weapon: reinvention