Battle Zone

**Battle Zone** is a system in *Eternal Return*.

## Description

Battle Zones are special areas purposefully made for battle. Each Battle Zone has a special environment. Some can increase statistics like movement speed, some increase Omnisyphon effects, and others provide a recharging shield. Here, players will be able to (somewhat) safely fight to the death, with the winning team receiving special Epic rarity materials.

Among the predicted locations of Night 2's restricted areas, some will be chosen as Battle Zones. The type of Battle Zone can be checked via the Battle Zone Mark on the World Map Security Console Location.

When the Battle Zone begins, the test subjects in the area become Battle Zone participants. If a participant dies in the Battle Zone, they will be able to revive outside the zone after a short period of time. However, players cannot rejoin a Battle Zone after being revived. If a test subject tries to enter or leave a Battle Zone, they will immediately die and cannot be revived.

## Details

### Battle Zone Mark

The Battle Zone Mark symbolizes the unique environment and gives special effects to participants. If a participant dies, the Battle Zone Mark can be recovered and used as currency for the winning team to purchase rewards. If there is no winning team, the recovered Battle Zone Marks are permanently removed.

The different battle zone types are:

* **Berserk (Swords):** All test subjects gain 20% Omnisyphon and their final damage dealt is increased by 25%.
* **Defense (Shield):** All test subjects gain a 300 health Shield after 2 seconds.
* **Acceleration (Boot):** All test subjects gain 20% Movement Speed and 20% Cooldown Reduction (limited by Cooldown Reduction Cap).

### Corrosion Gauge

In the Battle Zone, the Corrosion Gauge accumulates in return for strengthening test subjects' abilities. The maximum amount of Corrosion is 100. Test subjects who max out their Corrosion Gauge will die after 8 seconds. Corrosion Gauge can be recovered with Corrosion Stabilizers or by killing other test subjects (40 corrosion removed).

### Battle Zone Shuttles

In the Battle Zone, two types of shuttles will spawn: one intact and one damaged.

* The intact shuttles move along designated routes, releasing a corrosion stabilizer in a 5m radius around them, reducing corrosion by 4 per second.
* The damaged shuttles will explode after a time, releasing a corrossion freeze buff in a 15m radius around them instead.

## Battle Zone Rewards

The last team standing in a Battle Zone will be declared the winner (in the event only one team was in the zone, they will win automatically). The zone will immediatelly become a Restricted Area, but the winning team will be able to safely move in it until the next time shift.

One player on the winning team will be able to select one of the following items:

**Tree of Life****Meteorite****Tac. Skill Module****Mythril****Force Core**
Some of the rewards require a minimum number of test subjects to have participated in the Battle Zone for them to be redeemable:

* **Tree of Life:** At least 1 test subject
* **Meteorite:** At least 1 test subject
* **Tac. Skill Module:** At least 1 test subject
* **Mythril:** At least 4 test subjects
* **Force Core:** At least 7 test subjects

## Notes

* **Battle Zone Play Logic Numbers:**
	+ Max Corrosion Gauge: 100
	+ Update interval for Corrosion Gauge and time increase/decrease: 0.1s
	+ Time between reaching Max Corrosion Gauge and Explosion: 8s
	+ Corrosion Gauge Recovery Range for Battle Zone shuttles: 5m
	+ Battle Zone shuttle's Corrosion Gauge Freeze buff exploding range: 15m
	+ Gauge recovery per second from active shuttle: 4
	+ Natural Corrosion Gauge gain per second (when the shuttle is not receiving gauge recovery): 4
	+ Corrosion Gauge recovered from slaying enemy test subjects: 40
	+ Battle Zone shuttles Movement Speed: 3.5m