A model of the prison yard on a war-room table, from the Lands of Jail key art

3minutes to read

A prisoner in an orange jumpsuit chained to a chair, from the Lands of Jail key art
The bastion robot

11of 31 events

rex, hero portrait

Two alliance Legions of 30 fight for one hour on the Crystal Plain.

Crystal Clash

Event · Alliance vs Alliance

Crystal Clash

Two alliance Legions of 30 fight for one hour on the Crystal Plain. Capture strongholds for points every minute, hold the Bomber Command Center for airstrikes, and pick a role before the battle.

Hold the Crystal Ironprison in the centre from minute 15. Personal Crystal Points under 2,000 earn nothing, and 240,000+ earns the top rewards.
14 days
Between runs. Each run lasts 7 days.
30 + 10
Combatants and Reserves per Legion. At least 15 to register.
Lv.16
Warden’s Office needed. Nobody offline more than 5 days.
60 min
Battle, after 3 minutes of preparation.
4
Battle times: 02:00, 12:00, 14:00 and 19:00 server time.
+100%
Healing Speed for everyone during the battle.

The week and the roster

  • •Days 1–2 vote on the time slot, days 3–4 register, days 5–6 matchmaking, day 7 battle. No opponent free in your slot? You can be matched with a Legion from another slot, and the battle time is picked from the two at random.
  • •Legion 2 unlocks at Alliance Lv.6 with 40 members active that week. Only Legion 1’s result counts for the alliance rating and alliance rewards.
  • •Reserves can enter 3 minutes after the start, if fewer than 30 are inside. Leaving locks you out for 10 minutes.
  • •Matchmaking uses the War Power of each Legion’s top 20 members (Satellite, Collection, Tome, Hero Gear, Military Tech and peak Prisoner Power Armor) plus win rate. Servers 1–68 never meet servers 69 and up.
  • •Registering gives 12 training speed-ups (5 min).

Strongholds

StrongholdOpensFirst capture (alliance · you)Per minute (alliance · you)When held
Crystal Ironprison ×115:0012,000 · 6,0002,400 · 1,200The main source of points
Crystal Ironhold ×23:008,000 · 4,0001,600 · 800—
Crystal Prison ×43:004,000 · 2,000800 · 400—
Pillbox15:001,600 · 800320 · 160+15% Lethality and +15% HP
Bomber Command Center15:001,600 · 800320 · 160Airstrikes
Energy Hub3:001,600 · 800320 · 160Free-teleport cooldown −50%
Refinement Center3:001,600 · 800320 · 160Capture time −50%

Capturing takes 2 minutes. Each stronghold can hold as many points as its per-minute alliance figure. Above that, half the points are kept and half are “temporary”: when the stronghold falls, the temporary points scatter as 8 crystal piles that anyone can pick up. Gates burn 4,000% faster during the battle, and a burned-out gate sends you back to camp. The free teleport has a 12-minute cooldown.

Airstrikes

Fully control the Bomber Command Center and its first garrison calls an airstrike every 5 minutes. Each wave severely wounds 10%, then 20%, 30%, 40% and 50% of the enemy garrison, and for 5 minutes cuts their damage dealt and raises their damage taken by the same amount.

Alliance rating

4 tiers. Each Legion 1 win gives +1, each loss −1, and a tier needs 2, 3, 4 or 5 points to rank up (1 Universal Speed-up of 1 h each time). Reaching rating S unlocks the Frontline Falcon Honor Exhibit (+3% gathering). Stats start counting after 3 runs.

Roles — pick one before the battle

RoleSkills
Crystal CommanderUnstoppable Surge (use it): +10% Troops ATK and DEF for 60 s, every 5 min · Call to Arms: +200,000 rally capacity · Blitz Charge: +100% rally march speed
Crystal WarriorRapid Recovery (use it): heals 50% of the wounded in the Infirmary, every 30 min · Rapid Support: +200% march speed when joining a rally · Rising Spirit: +10% Lethality and +10% HP for each rally or garrison you join, up to 5 times (+50%)
Crystal EngineerCakewalk (use it): resets the free-teleport cooldown, every 10 min · Easy Pickings: +20% points from scattered crystals · Full-Speed: +100% depot gathering speed

Rewards

WhatReward
Alliance win (Legion 1)3,200 Crystal Coin, 120,000 Alliance Contribution, 1,200 Diamonds, 2 Teleports, 8 Advanced Supply Cards (loss: 2,400 coin, 60,000 Contribution, 600 Diamonds, 1 Teleport, 4 cards)
PersonalBy Crystal Points: 2,000, 27,000, 56,000, 120,000 and 240,000+. A win at 240,000+: 19,200 Crystal Coin, 4,000 Diamonds, 12 Legendary Hero Shards, 20 training speed-ups (1 h), 120 Hero EXP items (5,000 each) and 2 Frontline Falcon mansion decorations. Under 2,000: nothing.
MVP“Crystal General” skin, 14 days
Crystal Coin shopLegendary Hero Shard 4,000 (×3), Precision Gear 1,000 (×18), Tome seals 400, speed-ups (1 h) 400, Cosmic Core 8,000 (×1), and 3 shards of each current-generation hero at 4,000