Time-Based Boss Scaling
All times are relative to 21:00 UTC Friday
| Boss | Base Difficulty | Time After Reset Until Boss Hits Base Difficulty | Is affected by Anti-Rush? |
|---|---|---|---|
| King Slime | 1.0 | - | - |
| Eye of Cthulhu | 1.0 | - | - |
| Eater of Worlds | 1.0 | 1 day | - |
| Brain of Cthulhu | 1.0 | 1 day | - |
| Queen Bee | 1.0 | 1.25 days | - |
| Skeletron | 1.0 | 1.5 days | - |
| Wall of Flesh | 1.0 | 2 days | - |
| Twins | 1.0 | 3 days | - |
| Destroyer | 1.0 | 3 days | - |
| Skeletron Prime | 1.0 | 3 days | - |
| Empress of Light | 0.8 | 3.5 days | - |
| Plantera | 1.1 | 4.5 days | - |
| Golem | 1.2 | 5 days | Yes |
| Duke Fishron | 1.2 | 5.5 days | Yes |
| Cultist | 1.2 | 6 days | - |
| Moon Lord | 1.0 | 6 days | - |
| Considering Base Difficulty is the strength multiplier |
The scaling currently applies to the boss and its projectiles only. All bosses bottom out at 80% strength at 10 hours passed their vanilla time target.
The exact strength of all bosses at a specific time can be checked in-game (in survival only) via /strength
Scaling Graph:
Player Count Boss Scaling
The following bosses are fixed at a specific number of players and will not be scaled based on how many actual players there are:
- Skeletron Prime at 10 players
The following bosses have an additional specific numbers of numbers of players and will be scaled based on how many players there are:
- Duke Fishron at 15 players
- Empress of Light at 5 players
All other bosses are scaled at a minimum of 17 players. That is, the bosses do not change health until there are more than 17 players, then vanilla scaling applies.
Anti-Rush Mechanic
Anti-Rush is a mechanic which makes bosses impossible to spawn until they hit Base Difficulty time. This was made to prevent a fast boss progression in Survival.
Mob Strength Scaling
| Mob | Scale |
|---|---|
| Bone Serpent | x3 |
| Hellbat | x1.8 |
| Lava Slime | x3 |
| Fire Imp | x2 |
| Burning Sphere | x3 |
| Demon | x3 |
| Blazing Wheel | x3 |
All others are x1
Old One’s Army Scailing
In order to prevent a frustrating fight, some enemies are fixed at a specific number of players and will not be scaled based on how many actual players there are:
- All Old One’s Army mobs at 5 players.
Exept for Bosses that have a different formula:
- Betsy:
4 + (Active Players / 3) - Ogre:
3 + (Active Players / 3)
Super Enraged Wall of Flesh
When enabled the WoF is scaled to x20 base strength (time based scaling still applies) and health is reduced to 2.5% of what the health would be at that strength normally.
Boss AI Modifications
Queen Bee
Queen Bee has been modified to automatically despawn once it tracks a target that is no longer in a jungle biome or if Queen Bee is close to spawn, it’s likely the boss will still travel outside of any jungle biome but it should despawn once arriving at a player that is not within a jungle biome (be aware that jungle farms at spawn can still count as a jungle biome)
Plantera
Plantera has been modified to automatically despawn once it gets close to spawn.
More Travelling Merchant Chances
Each day, a Travelling Merchant has 50% chance to spawn at 12:00 AM. Keep in mind it’s impossible to have two of it in the world and they follow the same restriction as a natural one to spawn.