Rolemaster Express (RMX) is a version of Rolemaster which was developed as an experiment to demonstrate that the Rolemaster system is not as complicated as some people think. With this version all the basic rules and a sample adventure are contained within an 88-page book, making this book similar to Iron Crown's Middle-Earth Role-playing book. The book provides 4 professions (fighter, rouge, animist, and magician), 4 races (humans, wood elves, dwarves, and halflings, a condensed combat system, 30 spell lists, 20 monsters, and a treasure generation system.
A series of PDF supplements has been written to support this version of Rolemaster.