How to play: 

wasd - move

F = pick up items

left mouse button - use item/attack

right mouse button - control monsters

mouse scroll - select item

if you are lost use shift it shows where the cauldron is

ctrl - select units

ctrl + G select all

To revive trees, stones, etc. you need mana powder(use it with left mouse button on something)
To revive your enemies and bring them to your side, you need soul powder
Recipes:

mana flower + wood + grass = mana essence 

stoneX2 = sand

sand + mana essence = mana powder

woodX3 + grass = coal

stone + mushroom = coal

coal + sand = glass

mushroom + coal = mana essence 

glass + grass = bottle

berry + bottle of wate = healing potion

sand + soul = soul powder

mushroom + boneX2 = soul

iron plate + soul + mana essence = gold

soul powder + mana powder + gold = golden powder