Omnia (2014)

Strong warriors and wise mages roam Omnia. The alien land is not real, but a fictional game created by scientists, in which people compete with each other. With the help of a mind-altering substance, they are transported to the extraordinary world in a secret laboratory. But this different reality also holds dangers, because the administered drugs have side effects. And so the fun soon turns into a very serious matter.

Unfortunately the movie Omnia is not yet available on HBO Max.