Grudge of Gregorius is a mythical open-world action-adventure game by Deadflex Studios, officially released on January 25, 2020. Developed by a team of 24 students in just eight weeks, the game showcases a remarkable effort in indie game development.

In Grudge of Gregorius, players control a Necromancer who utilizes musical combat mechanics to raise corpses and fight monsters, blending rhythm with traditional action gameplay. The game encourages exploration as players seek out magical instruments that were sealed away by the Gods.

The storyline of Grudge of Gregorius follows the Necromancer's quest for revenge against the Gods after losing a brutal battle, motivating players to uncover the character's backstory while navigating a richly designed world.

Grudge of Gregorius stands out with its unique combination of music and combat, allowing players to engage in battles through rhythm-based mechanics, creating an innovative gameplay experience that emphasizes both strategy and creativity.