RPG is a file extension that is used by a tool called RPG Toolkit. It is a small application that allows you to create RPG games. The program was developed by Christopher Matthews and runs under Microsoft Windows. RPGs are games whose action takes place most often in a fictional world based on a planned scenario.

This tool has its own scripting language and RPG code. RPGs are files used to store the code generated in the RPG Toolkit. This program also allows you to create any 2D games.