Since 201429 Oct 2026
What it is
Fiend's Lair is a permanent dungeon that opened on 27 November 2014. It has 18 floors, each with its own boss. The lower half is a silver run you pay for with silver; the upper half is a CPs gamble you enter with permits from the Shopping Mall.
| NPC | Where |
|---|---|
| Fiend Lair Herald | Twin City (340,423) |
| Crystal Merchant | Twin City (340,427) |
| Fiend Lair Guard | Inside the lair (194,166) |
Floors 1 to 10: the silver run
- Pay the Fiend Lair Herald 10,000 silver to enter floor 1.
- On each floor you choose: kill the floor's boss for its silver, or ask the Fiend Lair Guard (194,166) for tasks to go higher. Killing the boss ends the run and sends you back to the Market.
- When the tasks are done, the guard opens 4 portals. They are unstable: a portal may take you up a floor, down a floor or leave you where you are, so pick carefully.
- On floor 10 you also have a chance to get a permit for floor 11.
| Floor boss killed | Silver prize |
|---|---|
| 1 | Nothing |
| 2 | 5,000 |
| 3 | 10,000 |
| 4 | 15,000 |
| 5 | 25,000 |
| 6 | 50,000 |
| 7 | 100,000 |
| 8 | 150,000 |
| 9 | 200,000 |
| 10 | 250,000 |
Floors 11 to 18: the CP floors
Buy a Fiend Lair Permit in the Shopping Mall and right-click it to go straight to its floor, with no tasks. Each permit works once. Killing the boss gives a chance at one prize: EXP, another permit or a CPs amount. The table shows the best prize on each floor.
| Floor | Permit price | Boss | Top CPs prize |
|---|---|---|---|
| 11 | 10 CPs | Frost Snake | 1,380 |
| 12 | 50 CPs | Fire Rat King | 6,900 |
| 13 | 100 CPs | Soul Drainer | 13,800 |
| 14 | 200 CPs | Dread Thunder | 27,600 |
| 15 | 500 CPs | Bloody Vampire | 69,000 |
| 16 | 1,000 CPs | Dark Delilah | 138,000 |
| 17 | 2,000 CPs | Chaos Ox | 276,000 |
| 18 | 5,000 CPs | Moon Shade | 690,000 |
