Monster Hunter G is a Japan-only expansion for Monster Hunter on PlayStation 2. It introduced additional Quests, new gear, and alternate color variations for original monsters, along with a fresh set of "G-class" or "G-rank" missions. The maximum Hunter Rank was raised from HR20 to HR30, and several convenience improvements were included in this edition. Initially launched for PlayStation 2 in 2005, Monster Hunter G was later made available on the Nintendo Wii in 2009. The Wii version includes numerous gameplay adjustments that bring it closer in style to the earlier title, Monster Hunter Freedom Unite.
| PS2 | January 20, 2005 |
| Wii | April 23, 2009 |