How to Build a Horde Base That Fits Your Blood Moon

The blood moon horde runs 22:00 to 4:00 game time. Its size depends on gamestage, not on the day alone: gameStage = ( playerLevel + daysSurvived ) * difficultyBonus. The usual cycle is every 7th day, per XGamingServer; the frequency is a world setting and our files do not state a default, so the rows below are the days a 7-day cycle lands on.

Each cell is gamestage, zombies in all, and how many can be alive at once. Pick your level column, or use the calculator.

At gamestage 20 the file sends 54 zombies, 8 alive at a time, from 17 kinds. Only base zombies and the first Burnt (gamestage 16) are in the list. A fortress is wasted here. You need height, one door and a weapon.

Two cheap designs from the guides: wiki.7d2d.net (V2.6) describes a stilt box (a 7 × 7 cobblestone platform 4 high with a 3-wide ramp and an iron door, about 200 cobblestone) and a dug 5 × 5 bunker 3 deep with a hatch; IzPrebuilt (video, 2.5) fills a 5 × 5 cobblestone block 6 high with a door, just under 300 cobblestone.

Day 21 to 28 at levels 30 to 50 is gamestage 61 to 93: 20 to 30 alive at once. Electric fences, dart traps and blade traps are unlocked by the Traps skill's Electrical Traps magazine at level 25. The turrets come later.

The wiki's gauntlet is a 3-wide corridor up to an elevated platform (8+ blocks), iron spikes on the floor, 2-high electric fences on the walls and blade traps at head height; XGamingServer adds that Advanced Engineering raises trap XP and that unsupported overhangs can collapse a whole structure. Dart traps use ammo.

Day 28 to 49 at level 30 to 50 is gamestage 69 to 118. Up to 37 alive. This is where the horde stops being a crowd of walkers: Burnt (gamestage 16), Spider (gamestage 35), Zombie Dog (gamestage 40), Zombie Vulture (gamestage 44) and Hazmat (gamestage 49).

Vultures fly, so a design with an open top fails. The wiki lists "ignoring vultures (no roof)" among the common mistakes, and they join at gamestage 44. The shotgun turret unlocks at Traps 50 (9 damage × 8 pellets, out to 15 m) and the SMG turret at 75 (32 damage, out to 30 m); both have a power field of 15.

At gamestage 97 the file sends 411 zombies with 32 alive; at 150, 414 with 47; at 202, 558 with 63. Feral zombies appear from gamestage 64, radiated ones from 133, demolishers from 147. The most the waves send is 1,000.

Two late designs from the guides: a 15 × 15 pit 8 deep lined with concrete under a shooting platform (wiki.7d2d.net), and WaywardEko (video, 2026), a pit base with grenade chutes and a double set of powered vault doors that he stress-tested at gamestage 1464 with 64 zombies. Against demolishers the wiki says not to use shotguns and to kill them before they reach the walls.

wiki.7d2d.net's day 6 checklist, as players use it (V2.6): repair the base, bring 500+ rounds of your main ammo, 10+ first aid kits, a fuelled generator, repair kits, a backup melee weapon, food and water and a clear way out. It is a player checklist, not a number from the files.