Tomb Raider: Underworld is a single-player action-adventure game where the player controls the protagonist, Lara Croft, from a third-person perspective, through a variety of locations around the world.[1][2]: 7–9  Lara can jump, climb and shimmy along ledges and vertical poles or ladders, crawl through small spaces, and swing on ropes and horizontal poles. Some areas have climbable surfaces she can scale, and some ledges allow her to stand on them and shimmey along. Other abilities include wall jumping between two adjascent surfaces, interacting with objects and switches, using a grappling hook to latch onto special rings for both puzzle solving and environmental traversal, and swim and dive underwater for a limited time. Different button combinations can create more moves such as a roll and swan dive.[2]: 7–9 [3][4] Puzzles revolve around Lara finding keys to mechanisms in the environment, or manipulating different mechanisms to trigger larger elements within and around the environment. There are also traps which need to be avoided, some of them involved in the puzzle design.[1][4] During some levels, Lara has access to an all-terrain bike which is used in both navigation and puzzle solving.[5]