Summoner (Volition, 2000)

Born with the mark of the Summoner, Joseph possesses a power greater than emperors and gods. As a child, he summoned a demon to save his village, and watched in horror as those he loved were destroyed. Nine years later, the armies of Orenia invade, and Joseph must confront the prophecy he was born to fulfill.

• Traverse a beautiful, completely original world spanning two continents

• Encounter hundreds of characters and battle in realtime with a 5-person party

• Summon red minotaurs, black imps, golems, and other powerful allies

• Cast spectacular spells. Wield an arsenal of weapons. Clad yourself in the armor of a warrior

This is the PS2 version of the game. I have also uploaded the PC version of this game and the PS2 version of Summoner 2