KeenGamer: “Fit into the shoes of Pablo, an energetic dog on the search for treasure! Soon enough, he’ll come upon a grappling hook, transforming him into none other than Grapple Dog. (He does not refer to himself in this way, to my knowledge.) Swing, zip, and bounce your way through a few available stages during Steam’s Next Fest.”
Source: N4G PC Grapple Dog Demo Preview: Swingin' Sweetness – KeenGamer