
Prologue: Go Wayback! is an upcoming survival game made by PlayerUnknown Productions, the devs behind PUBG. It's pretty hard going, with an unforgiving environment and survival mechanics like hunger, thirst, and temperature all constantly on your back, making it harder to cross the rocky and confusing terrain.
But its difficulty isn't actually the main appeal of Prologue; it's probably the fact that its map, which is randomly generated, is going to be 100x100 kilometres. It's an impressive bid to make a massive, realistic world for a survival game to be set in, but it's also no easy task.