Season 4 Overview: Evernight Isle

Welcome to Evernight Isle

Season 4 takes place on Sakura Isle, a Japanese-themed map that has been plunged into eternal darkness by the "Nightfall Device." Everything about this season revolves around a single mechanic: light versus darkness. If you played Season 2 and remember the Furnace, the Lighthouse fills a similar role — except the consequences of ignoring it are far worse.

The Darkness Problem

The Nightfall Device has blanketed Sakura Isle in permanent darkness. This is not flavour text — it directly affects your gameplay:

A 30% generation rate penalty is devastating over time. A 20% march speed penalty means your rallies arrive late and your reinforcements are slower. Both of these stack into a massive disadvantage if your alliance is operating in the dark while your opponents are not.

The Lighthouse

The Lighthouse is the centrepiece of Season 4. It dispels darkness in a radius around it and grants the Light Buff to all allied units within its range.

How It Works

• The Lighthouse must be powered by electricity to function
• When active, it pushes back darkness and creates a safe zone
• Units inside the Lighthouse zone receive the Light Buff — removing all darkness penalties and providing bonus stats
• The range of the Lighthouse depends on its power level
• Keeping the Lighthouse powered is not optional. Treat it like breathing — you do not stop

Generators and Captured Zombies

Electricity comes from Generators, and Generators are powered by captured zombies. This creates a gameplay loop that your alliance must manage constantly:

1. Hunt zombies on the world map
2. Capture zombies and send them to Generators
3. Generators produce electricity
4. Electricity powers the Lighthouse
5. The Lighthouse dispels darkness and keeps your alliance buffed

If the zombie supply dries up or your alliance stops feeding Generators, the Lighthouse goes dark and everyone suffers.

Electricians

You can send Electricians to allied players to improve their Light Status and boost their virus resistance (VR). This is one of the most important cooperative mechanics in Season 4:

• Send Electricians to allies who are in darkness or under-powered
• Receiving Electricians improves your Light Status even if your personal power is low
• This is how stronger players help weaker alliance members survive
• Coordinate Electrician distribution through alliance leadership — random sending wastes resources

Blood Night Descend

Three times per day, things get much, much worse.

Blood Night Descend occurs at 02:30, 10:30, and 18:30 server time, lasting 30 minutes each. During Blood Night:

• Zombies become dramatically stronger and more aggressive
• Doom Elites spawn — powerful elite zombies that are extremely resistant to damage
• Normal PvE activities become significantly harder
• The darkness intensifies, pushing back even active Lighthouses

Blood Night Schedule

Lucky Cats (Maneki-neko)

A lighter mechanic in an otherwise dark season. Lucky Cats (Maneki-neko statues) appear on the world map and provide daily rewards when found.

• Lucky Cats appear for 60 minutes after you uncover them
• They provide various rewards — resources, speedups, and season-specific items
• Explore the map regularly to find them
• They are first-come, first-served — if another player claims one before you, it is gone
• Not a make-or-break mechanic, but free rewards are free rewards

Tactics Cards

Season 4 introduces Tactics Cards, a new enhancement system that provides powerful boosts to both PvE and PvP performance. This is a deep system that deserves its own guide — see the Tactics Cards Guide for full details.

The short version:

• Tactics Cards are collectible cards that slot into your loadout
• Each card provides specific stat boosts or special effects
• Cards can be combined to create stronger versions
• You should build separate loadouts for PvE and PvP content
• Card effectiveness stacks with your existing hero and gear systems

Copper War

Starting from Week 4, the Copper War begins. This is the defining competitive mechanic of Season 4 — copper determines your alliance's final season ranking.

How Copper War Works

• Alliances fight to control territory that produces copper
• Cities produce red copper hourly — the more cities your alliance controls, the more copper you accumulate
• Copper is the only resource that matters for final season rankings
• The alliance with the most accumulated copper at season end wins

Copper War Strategy

Alliance Power Station

The Alliance Power Station centralizes electricity management for your alliance. Instead of every player individually managing their own power supply, the Power Station pools resources:

• Alliance leaders can direct power to where it is needed most
• Critical during Blood Night when power demands spike
• Stronger players can contribute more to support the whole alliance
• Requires active alliance officer management to function well

T11 Troops (Off-Season)

Season 4's off-season introduces T11 troops, the next tier of military units. This is a major progression milestone:

• Requires HQ Level 27 to unlock
• Two types: Armored Troopers (defence-focused) and Assault Raiders (offence-focused)
• Swappable every 72 hours — you can change type based on whether you are defending or attacking
• Approximately 5-10% stat boost over T10 — significant in close fights but not game-breaking
• See the T11 Troops Guide for full details on whether to rush the upgrade

Armament Institute

A new building introduced in Season 4 that cannot be upgraded — it is functional from the moment you unlock it. The Armament Institute provides 4 research paths that introduce new progression resources:

• 4 Research Paths: Helmet, Body Armor, Accessories, Weapon — must be completed in order
• Introduces Armament Materials and Armament Core as new resources
• Provides incremental power boosts through research completion
• Long-term investment — do not expect instant returns

Notable Differences from Previous Seasons

Season 4 Priorities Checklist

1. Get your Lighthouse powered immediately — darkness penalties start from Day 1
2. Establish a zombie-hunting rotation for Generator fuel — this is an alliance-wide effort
3. Learn the Blood Night schedule and plan your daily activities around it
4. Start collecting Tactics Cards and build PvE and PvP loadouts
5. Prepare for Copper War in Week 4 — identify target cities and alliance strategy
6. Send Electricians to allies who need Light Status boosts
7. Begin Armament Institute research — it is slow, so start early
8. Work toward HQ 27 for T11 troop access in the off-season
9. Explore the map for Lucky Cats — free rewards add up
10. Coordinate with your alliance constantly — Season 4 punishes lone wolves harder than any previous season

Common Season 4 Mistakes

1. Ignoring the Lighthouse — operating in darkness is like fighting with one hand tied behind your back
2. Fighting during Blood Night without a rally — solo attempts waste troops and speedups
3. Not preparing for Copper War before Week 4 — by the time it starts, your strategy should already be set
4. Spreading Electricians randomly — coordinate through alliance leadership for maximum effect
5. Neglecting Generator fuel — zombie capture is a boring chore, but it powers everything else
6. Treating Tactics Cards as optional — the stat boosts are significant and compound with your existing gear and heroes
7. Trying to hold every city in Copper War — focus on defensible positions rather than overextending

Related Guides

• Lighthouse & Electricity Guide — deep dive into Lighthouse mechanics and electricity management
• Tactics Cards Guide — card types, combining strategies, and loadout optimization
• T11 Troops Guide — unlock requirements, troop types, and the Armament Institute