Lego Batman: Legacy of the Dark Knight was one of the big surprises during last year’s Gamescom: Opening Night Live showcase. Not only is it mechanically a pretty big departure from the usual fare of Traveller’s Tales’ Lego games, but it also kind of seems like a follow-up to the Arkham games that we’ve been lacking for over a decade. The game’s nearly here, so let’s break down everything we know so far. The obvious Arkham influence Legacy of the Dark Knight draws heavily from Rocksteady’s Batman: Arkham games. Like those games, it takes place in an open-world Gotham with Bruce gliding and grappling around as he finds thugs to beat up and Riddler puzzles to solve. When he’s on the ground, the mini-figure Batman rides around on a motorcycle and in the Batmobile, and in combat, he throws almost rhythmic punches, kicks, and parries like he does in the Arkham games. When I played the game in October, my muscle memory for those old games kicked in pretty quick.…