Everyone Transmigrates: Surviving the Apocalypse

[World's end + no mindless plot + infinite-level survival + everyone transported to an unfamiliar world + primitive society + random unknown dungeons...]

With torrential rain sweeping the globe, Lin Hai was holed up in his dormitory, but unexpectedly transmigrated to an unfamiliar primitive world. Just as he'd finally managed to make a good life for himself, everyone else transmigrated too...