The former publishers of MGP Runequest.
- Mongoose Publications ceased publishing Gloranthan material in 2011.
- Their rules system is now published as "Legend" with no Gloranthan content.
- All Mongoose Gloranthan publications are out of print.
- Their works include:
- MGP Runequest 1 (2006)
- Glorantha: The Second Age (2006)
- Cults of Glorantha Volume 1 (2006)
- Cults of Glorantha Volume 2 (2006)
- Mongoose RuneQuest Companion (2006)
- Dragonewts: A Guide to the Eravssarr (2007)
- Aldryami: A Guide to the Elfs (2007)
- Jrustela (Publication) (2007)
- Dara Happa Stirs (2008)
- MGP Runequest 2 (2010)
- Cults of Glorantha (2010)
- Pavis Rises (2010)
- The Abiding Book (2010)