“Not just another Limbo knockoff” is what they meant, as it’s in a category of games like Feist, Typoman, Toby and the Lost Mine, Albert & Otto, Monochroma, Selma and the Wisp, Nihilimbra, Badlands, Nightsky, and Project Spark, to name a few, that tend to borrow either the silhouetted character or lost child idea for an atmospheric indie side-scrolling platformer (in this case, it appears to borrow both, making it look even more Limbo-like than most Limbo-like games).