The Orbal Revolution (導力革命 Douryoku Kakumei) is technical revolution that Professor Epstein brought 50 years ago before the start of the first game. As a result of this research, Epstein furthered from this innovation towards mass production into the invention of orbal-utilizing objects called Orbments, and the technology quickly spread throughout the land. From that point on, human began to rapidly progress and advance, birthing innovations of all shapes and sizes.
Although the positive impact of this revolution is obvious, every coin has a flipside; for every beneficial device developed with these new materials, so too were advanced weapons and other implements of war. Thus, the Zemuria continent became mired with turmoil, and remains in such a state even to the present.
In particular, Liberl quickly became one of the most advanced nations on the continent thanks to the efforts of Professor Albert Russell, one of Epstein's disciples. The Epstein Foundation continues its work on Orbal technology as of today.