Tomb Raider: Underworld is one of two mobile games that are based on the PC/console game with the same name. Both games feature the same plot. It starts in Baldr's tomb where Lara's task is to find Thor's helve. The player has to explore the tomb and find a key to the crypt. By following the trail of Thor's artifacts Lara hopes to be able to get to Avalon where she thinks her mother might be.
This version of the game is a side-scrolling 2D platformer. Lara runs left and right, jumps between platforms and hangs onto ledges that she too can jump between. When enemies appear she can draw her guns and attack them. In addition there are other hazards and obstacles that has to be avoided. This include falling rocks, pales sticking up from the ground and rotating knifes attached to walls. Various objects can be collected and these can then be accessed from the inventory.