Chests:
Levels can contain up to six different chests from which you can obtain loot.
Silver chests:
Silver chests contain equipment and occasionally diamonds.
Gold chests:
Gold chests contain a gold star, which is needed if you want to complete the levels with three gold stars. No additional value is given for this accomplishment.
Special golden chest:
Some levels contain special golden chests that require up to 35 gems to open and will give you a stronger item than silver chests do at that level.
Objective chest:
Some levels have the challenge to find the hidden treasure chest, which contains useful technology items.
Agressive chests:
These chests appear like slightly bigger silver chests, but turn into monsters as soon as you try to open them.
Scared chests:
These chests try to run away when you approach them.
Scared chest