- A reference guide and manual in Russian for Heroes 3.

WEEK/MONTH EVENTS
Week events:
1. No growth weeks happen with 75% probability, while +5 growth weeks happen with 25% probability. As a consequence, there is a 0.2% probability for a specific creature +5 growth week (there are 126 possible creatures in total).
2. There can never be a double growth week.
3. There can never be a week of neutral creatures.
Month events:
1. No growth months happen with 50% probability, double growth months happen with 40% probability, and plague months happen with 10% probability.
2. Only the following creatures may experience double growth: Serpent Fly Griffin Centaur Gremlin
Hobgoblin Gog Troglodyte Harpy
Lizardman
Pegasus Wolf Rider Wight
Imp
As a consequence, there is a 3.3% probability for a specific creature double growth month. The only exception to the rule is when a Grail is built in an Inferno town: all the following months will be Imp double growth months.
3. There can never be a +5 growth month.
If you happen to get a Week/Month of unapgraded creatures whose dwelling you already upgraded in your town, you will not receive a bonus.
Plague months have the following characteristics:
- All unpurchased creatures are cut in half, rounded down.
- All dwellings produce 0 creatures (exception below).
- Any dwelling which has a horde building built is immune to the effects of plague. Thus, a Castle with a Griffin Bastion produces Griffins normally. Similarly with Dwarves, Dendroids, Imps, Cerberi, Skeletons, Gnolls, etc.