Suikoden
- "Rage Rune can be used"
- —Item description
A Rage crystal is a type of item in Suikoden. When a runemaster attaches a Rage crystal to a character, it becomes a Rage Rune, which allows the use of advanced fire magic. It can be obtained from a treasure chest in Neclord's Castle (hidden behind the view of the stained glass window south of the stairs in Neclord's room), or as a drop from Elite Soldiers in Moravia.
Suikoden II
In Suikoden II, a Rage crystal can be created from certain combinations on the Guardian Deity (DUDU and DDTU). It is also dropped by Copper Sun and Seed.