Today's update brings the following changes:
- It is no longer possible to bring more than one account to the Nightmare per IP address at the same time.
- You now need to deal at least 600 damage to the Nightmare to be eligible for a drop (instead of 100).
- The cost to fight the Nightmare again after you die has been increased to 20M coins (instead of 1M).
The amount of HP the Nightmare's shield has scales with the amount of players. At 1 - 5 players, this is 2,000. When there are more than 5 players, the HP increases with 200 per extra player. Therefore, if there are 20 players fighting the Nightmare, its shield's hitpoints is 2,000 + (20 - 5) * 200 = 5,000.
The droprates also scale with the amount of hitpoints. Its base droprates (as found in our drop table) are based off a Nightmare with 2,000 HP. For a group of 20 players, and thus a Nightmare with 5,000 HP, the droprates are scaled by 5,000/2,000, or a factor of 2.5.
The droprate of an inquisitor's mace is 1/500. For a group of 20, and thus a scaling factor of 2.5, this droprate is increased to 2.5 * 1/500 = 1/200.
The droprate for each individual player depends on the amount of damage they dealt compared to the total damage dealt to the boss during the entire fight. For a group size of 20, the total damage dealt should be 15,000 (5000 HP times 3 for three phases, although this will be higher if the Nightmare was healed by parasites).
If one of the players in this group of 20 dealt 1,500 damage in total, then their drop rate for an inquisitor's mace is 1,500/15,000 * 1/200 * = 0.1 * 1/200 = 1/2,000.
The MVP, the player who dealt the most damage of all, receives an additional 5% bonus drop chance. If this player who dealt 1,500 damage is the MVP, then their drop chance for an inquisitor's mace is increased to 1.05 * 1/2,000 = 1/1,905.
