# The Lost Vault

Police Chief event. Data version 0.1.121. Page: https://betterpolicechief.com/events/the-lost-vault/

The Lost Vault is filled with exquisite safes!

1. Nine safes will randomly appear each time and are divided into Legendary, Epic, and Rare qualities. The number of Vault Keys needed to open safes of different qualities is the same; however, the higher the quality, the better the rewards.
2. Opening safes earns you points, and accumulating enough points grants corresponding rewards.
3. You can refresh safes for free 3 times daily. After these are used up, you can use Vault Keys for additional refreshes. Additionally, opening all 9 safes allows for a free refresh.
4. The probability of refreshing safes and obtaining rewards is as follows:

## Schedule
- Runs: 7 days
- Scope: whole server
- Unlock: Reach Chief's Office Lv. 6

## Draw milestones

### Set 1
- 5 draws: 1K Diamonds
- 10 draws: Legendary Patrol Skill Book ×10
- 20 draws: Commendation Medal ×30
- 30 draws: Legendary Deployment Skill Book ×10
- 50 draws: Commendation Medal ×50
- 100 draws: Gen 1 Hero Materials Chest (C) ×20
- 150 draws: Commendation Medal ×100
- 200 draws: Legendary Universal Hero Fragment ×20
- 300 draws: Commendation Medal ×200
- 500 draws: Gen 1 Hero Materials Chest (C) ×30

### Set 2
- 5 draws: 1K Diamonds
- 10 draws: Legendary Patrol Skill Book ×10
- 20 draws: Commendation Medal ×30
- 30 draws: Legendary Deployment Skill Book ×10
- 50 draws: Commendation Medal ×50
- 100 draws: Gen 2 Hero Materials Chest (C) ×20
- 150 draws: Commendation Medal ×100
- 200 draws: Legendary Universal Hero Fragment ×20
- 300 draws: Commendation Medal ×200
- 500 draws: Gen 2 Hero Materials Chest (C) ×30

## Packs (US App Store prices)
- Vault Key Pack (on sale each day of its event; limits reset daily): $0.99 (Vault Key ×120, 100 VIP Points ×5, Alliance Gift I) | $2.99 (Vault Key ×360, 100 VIP Points ×15, Alliance Gift I) | $4.99 (Vault Key ×500, 100 VIP Points ×25, Alliance Gift I) | $9.99 (Vault Key ×900, 100 VIP Points ×40, Alliance Gift II) | $19.99 (Vault Key ×1700, 100 VIP Points ×60, Alliance Gift III) | $49.99 (Vault Key ×3500, 1K VIP Points ×12, Alliance Gift IV) | $99.99 (Vault Key ×6000, 1K VIP Points ×20, Alliance Gift V)

## Editions
- Edition 1: schedule not by server day, 7 days
- Edition 2: schedule not by server day, 8 days
- Edition 3: server day 80+, 7 days (seen in game)
- Edition 4: server day 80+, 8 days

### Edition 2 compared with edition 1
- 1 removed set(s) of Draw milestones, 10 steps each

### Edition 3 compared with edition 2
- 2 new set(s) of Draw milestones, 10 steps each

### Edition 4 compared with edition 3
- 2 removed set(s) of Draw milestones, 10 steps each

Data updated 2026-10-26. Unofficial fan site; not affiliated with the game's makers.