Season 4: Stuff People Forget

The short version

Light on. Lab before Lighthouse 11. City buff needs the Oni. Spend Magatama before the week dies. Speedups on the right day. Wall only at home. Recall before Marshal.

Before the season starts

• Bank Hero's Return tickets. They do not carry a useful pool across seasons, so spend them on Day 1 of Season 4, not in the off-season.
• Send trucks out in the last minutes before the countdown hits zero. Once the season starts, they are safe.
• Reset the profession tree before the countdown.
• Do not kill the Doom Walker yet. The level 190 first kill only counts after the season starts.
• Barracks 35 can run now if it is not done. It needs Headquarters 35 and it is slow. It does not unlock T11. It only gets the barracks ready for the off-season after Season 4.

The season at a glance

• Pre-season: 2 weeks.
• Day 1: Donate to unlock the season buildings. Place the Lighthouse.
• Day 2: Tactics cards open.
• Week 1, Tuesday: Blood Night starts. Lucius exclusive weapon.
• Weeks 2 and 3: Blood Night Hunter, the Divine Tree.
• Week 3: Oni Summon. Adam exclusive weapon. Sarah can promote to UR. Faction choice, which sets your Copper War side.
• Weeks 4 to 7: Copper Wars, Wednesday and Saturday.
• Week 6: Williams exclusive weapon.
• Week 7: War's Eve.
• Week 8: Settlement. Warehouses stop. Spend Magatama, break cards.
• After the season: T11, in the next off-season.

Day 1

• The second the season opens, spend profession EXP. Engineer first, then the construction-cost cuts.
• Donate to unlock the season buildings: food for the Lab, coin for the Workshop, iron for the Alliance Center.
• Farm while you wait. Doom Elites drop Quartz and Stone. Small zombies drop Stone.
• Spend Hero's Return tickets now for Stone and Quartz. The Season 4 banner says Legend Returns.
• Place the Lighthouse and stop. No Stone on it.
• One Quartz Workshop to 15 before the next.
• The weekly pass building waits until the rest are moving. Its Quartz Workshop only goes to 5–7.
• Dice event: roll a few times before you take the chest. Leave ends it.

New this season

Season 4 is Evernight Isle, also called Sakura Isle. The new rule is light versus dark. Everything else hangs off that.

The story, short: The Doom Legion infected the idol Kageyama Ryūran with the Oni Virus (ONV). It woke the Oni General instead, and Ryūran built the Nightfall Device that put the island in the dark. The virus spreads in darkness. Your job is to bring the light back. Sarah, who trained at Kage no Sato, knows the island best.

The dark

• The Nightfall Device keeps the island dark all season.
• In the dark: generation −30%, march speed −20%, tactic-card drops about −15%, and stronger zombies and Doom Elites.
• A lit tile removes all of it.

- Virus Resistance is the check on zombies, Doom Elites, and stronghold guardians. Light and the Lab both add it. - Doom Elites are the season elites. They pay Stone and Quartz.

Lighthouse

• The new building in front of your truck. It stores power and lights a square around your base.
• The more power it burns, the bigger the lit area. Anything inside the light ignores the dark.
• Brightness L1 to L4: +50, +150, +250, and +250 Virus Resistance. Range and drain rise with each level. Resistance stops climbing at L3. L4 adds range and morale, and opens at Lab 20.
• Two switches. Brightness Auto-Adjustment: on. Auto Turn Off when Blood Night descends (Electrician tab): off. That second one is why a Lighthouse stays dark after the window.
• Blood Night adds 18,000 power a minute. L1 goes from 1,200 to 19,200. L4 goes from 18,000 to 36,000.
• Later, push it to 10 with iron and food. Stop at 10 until Lab 35. Going past 10 earlier eats the Quartz the Lab needs.
• For a rally, raise brightness, then drop back to L1. A neighbor at L3 covers you too.
• Light on for marches. That is how Mini Maneki-neko show.
• Turning the light off and on has a 1-minute cooldown.

Generators and electricians

• Four generators feed the Lighthouse. They open at Lab 1, 3, 10, and 15. Two hold L1.
• Capture zombies to run them. Captured zombies do not die. They sit in a cage and fuel the generator all season.
• Each generator comes with an electrician. One job at a time: light your march, power an ally, or charge a Lucky Cat.
• Keep one on the march. It lights the squad, shields it from the dark, turns off the Blood Night zombie buff, and can turn up surprise rewards like a Mini Maneki-neko.
• Lucky Cats (Maneki-neko): a Mini is one find a day, and only you can charge it. Large cats are shared, charged by an electrician, give 3 claims a day, and bank up to 15.
• Turn on "bring electrician on expedition." It needs one at home.
• Parked on an ally, they earn profession EXP. Fine overnight, not into Blood Night.
• Before Blood Night, bring them home or onto a beacon. Alliance Center power does not cover the spike.
• Battery cap is 300k. About 44 electricians cover a full Blood Night. 20 to 30 last 12 to 17 minutes.
• Combat players: two on you, one on allies, one as the bright light. Support players: one on you, three out.
• There are no alliance Stone or Quartz tiles. Send electricians to allies instead.

Optoelectronic Lab and Quartz

• The Lab is the season priority. It caps at 35 with 13,000 Virus Resistance, and unlocks brightness and generators.
• It runs on Quartz. Quartz pays for the Lab and season upgrades. Quartz Workshops make it.
• Stone pays for the workshops. Digging Strongholds and Doom Walker pay it. It is not Quartz.
• Keep workshops even. Each level is +720 Quartz an hour, and costs climb.
• Claim before storage caps.
• Quartz goes to the Lab, not the Lighthouse.
• The Protector is back at level 1. Keep it at 10 or below until the four Quartz Workshops are up. Past 10 it eats Stone or Quartz the Lab needs.

Blood Night and Oni

• From Tuesday of Week 1, three 30-minute windows a day. Later stages bring Oniwagons, an Oni legion, and the Holy Mountain.
• In Stage 1, lit bases are safe from wandering zombies, and first kills reset. Farm the first window.
• On Blood Night, island zombies become Blood Night Zombies. They hunt commanders who stay in the dark.
• Capturing a city does not turn its buff on. On Blood Night, pieces of the Oni General appear above each city. Kill it there.
• Magatama drops from Sakura Isle zombies, by chance. The Oni General's Magatama comes by mail.
• Oni Summon: a profession skill. Week 3, Blood Night only. A 5-minute skill that pulls Oni to your base. 20 Magatama per Oni.
• Magatama is the Blood Night currency. Week 1 shop: 10K Quartz for 20 (limit 10), the Legendary tactic pack for 500 (limit 1), and training certificates first. Speedups cost 2 and are a trap. Save Magatama for them in Week 8. Stock resets weekly.
• Exclusive weapons: Lucius Week 1, Adam Week 3, Williams Week 6. Sarah UR opens Week 3.
• Year of the Dragon, if built: +10% city coin for the season.

Blood Night Hunter

• Opens Week 2. Transform on a warless day. Survive 7 minutes for the max chest.
• Stay off Contaminated Land. There, anyone can hit you.
• Bank the free hunter teleports before the map seals.
• Week 7 War's Eve: shorter cooldown, higher HP cap, double Blood Blade.

Tactics cards

• They open on Day 2.
• Gold core cards stay after the season. Two slots.
• Battle and resource cards are season only. Dismantle them yourself.

Copper

• Copper decides your alliance's rank. The more it holds at season end, the better the rewards. It is not a building cost.
• Cities pay 100 Copper an hour per level. Level 6 is 600 an hour.
• Copper Wars plunder Alliance Centers: Wednesday and Saturday, Weeks 4 to 7. Alliance Center plunder 6%, side buildings 3%.
• Hit a held center in one timed wave, not a trickle.

Stone and the map

• Doom Walker first blood pays Stone every day, at any level. Level 190 is a one-time ceiling, and only after the season starts.
• Visitors at your wall pay Stone too. Easy to skip.
• Digging Stronghold: kill the guardian once, then it pays 100 to 200 Stone an hour. Level 6 pays double level 1.
• Stronghold credit takes one hit or one second of reinforcement. Rotate it.
• A 1-hero rally on a stronghold the top alliance is taking clears the Season Pass mission. No loot.

After the season: T11

• T11 comes in the off-season after Season 4. The Armament Institute appears then.
• Four researches, then a bill of materials, cores, and oil. Then you promote T10 into T11.
• During Season 4, the only prep is Barracks 35. Do not starve the Lab of Quartz to chase it early.
• Exclusive weapons work the same way: one to level 20 before a second gets shards.
• Free shard chests are in the Black Market after Season 4 ends. It is not open in the off-season before it.

Season end

• 2 core card slots. Duplicates do not stack.
• Card slots open near profession 80. Battle cards on top.
• Core cards stay. Break battle and resource cards into fragments yourself. Auto-convert is a bad rate.
• Week 8 is settlement. Warehouses stop on Day 1 of Week 8. Spend Magatama before then.
• Unused Quartz, Stone, and Power turn into Profession EXP. Season buildings are dismantled.

Written for players who already have a march. In-game screens can differ by server and change between seasons. Check yours before you spend. Updated October 26, 2026.