Wall World's Deep Threat DLC is available now on Steam. Watch the launch trailer for the Deep Threat DLC, which brings a continuation of the story, new mines, new upgrades, new enemies, a story boss, and more to the roguelite tower defense game. In Wall World's Deep Threat DLC, travel beyond the Great Rift and explore the Wall where no robospider has gone before! Fight new enemies and face a never before seen threat. Dig up unexplored biomes and unlock new technologies. Reveal the secrets of the past and get to the bottom of things.