In the original Tomb Raider 1, the game flow was completely hard-coded, including the levels, limiting the builders' flexibility. Tomb Raider 2 improved upon this by introducing a tombpc.dat binary file for game configuration, although it remained cryptic and required builders to use dedicated tooling. TR1X and TR2X have transitioned away from these earlier methods, choosing to manage game flow with a JSON file that provides a unified structure for both games. This document details the elements that can be modified using this updated format.