IRPG was the first major role-play system completed.
IRPG is designed as a 'big' RPG, with a meaty rulebook, as well as supplementary materials such as extra rules, a bestiary, and adventure modules. This system as more akin to old-school systems such as AD&D.
Currently there are no plans to resume work on IRPG. The system has been
superseded by Phalanx RPG which is more accessible system for newer players.
Here documentation can be found to play IRPG.
Everything you need is right here: the entire up-to-date IRPG collection.
this is a .zip file the contains the following .pdfs
Below you can download pre-made adventures to work with the IRPG system.
These are all .pdf files.
The characters become trapped within an ancient crypt. Can they unlock the mysteries of the place and escape, or succumb to the dangers within?
While on the road, a band of adventurers becomes embroiled in a quest to save an isolated town from a wicked spell-caster ruining their water supply.
During a brief visit to the Grellkin homeland, a band of unlikely allies are hired by a father who needs them to help him rescue his kidnapped kin.
A recording of friends and I playing the "Poison's Source" module