The RCX Constructopedia includes an extensive set of instructions meant to introduce beginners and advanced builders alike to new concepts in building with the RCX. 418 pages.

How to build animal parts and animals, including full instructions to build a penguin, a giraffe, and a frog.

Building kinetic structures with the RCX building system. Includes full instructions on how to build the following:

 1) Catapult

2) Music Box

Building smart structures with the RCX building system. Includes full instructions on how to build:

 1)  Garage

2) Clock

3) Drawbridge

4) Putter (for golf)

5) Conveyor Belt

6) Jack-In-The-Box

How to build a sturdy structure out of LEGO bricks, testing the stability of structures made with the "Flick Test".

Bracing a structure using the RCX building system.

How to build a bevel gear using the RCX system.