The core gameplay of Lego Batman is similar to that of previous Lego video games, such as Lego Indiana Jones: The Original Adventures and the Lego Star Wars series.[3] The player controls any one of a wide assortment of characters from a third-person perspective, primarily fighting enemies, solving puzzles, and collecting Lego "studs", the game's form of currency. Using attack combinations in combat will multiply the amount of studs earned. Studs can be utilized to purchase different powerups or customization options.[4] The game is set in Gotham City, with mainly realistic environments; only interactive objects are made of Lego bricks. Occasionally, players must assemble Lego objects to proceed further in the level, cross obstacles, or unlock new suits.[5] Players are able to fight on land, sea, and in the air, using a number of character-controlled vehicles, including the Batmobile, Batboat, and Batwing. New moves to the series first featured in Lego Indiana Jones: The Original Adventures are featured in this game. New abilities introduced in this game include picking up and carrying enemies and walking on tightropes across buildings. Up to two players can play in co-operative mode,[6] except in the PSP version which does not feature this mode.[7]