Death March to the Parallel World Rhapsody (2018)

S1E2 Exploring a City That Started with a Death March

Satou finds himself trapped in a parallel world that resembles a fusion of all the game projects he's worked on. Although his inside knowledge of the world's mechanics gives him an edge, he still has to get his bearings before he can figure out his next move. With that in mind, he sets off for the nearest city to establish a base of operations.