Basic Mechanics

"'Take control of a horde of zombies to ravage small towns.'"

Starting Off
Beginning off the game you are met with a small screen explaining the basic mechanics. Here's an in-depth rundown of those mechanics.
 * Clicking spawns 1 zombie at the cost of 10 energy
 * Energy regenerates over time, starting at 1 per second
 * Zombies will attack humans on the level giving blood (common currency) and gives 1 brain (higher tier currency) for killing a human/turning them into a zombie
 * Holding shift/control will allow you to spawn the max amount of zombies your current energy allows (IE, 20 energy gives 2 zombies) up to 100 per spawn
 * Using the resources you have you can buy upgrades in the shop (Holding shift/control allows you to buy the max amount of upgrades you can afford)

Progress past the first levels shouldn't be hard. Due to how slow the zombies start, the beginning is going to be rather slow, however, don't let that dissuade you. The game picks up pace the further you get in.
 * You can move around the map using the mouse by clicking and holding or you can move around using WASD/Arrow Keys. To zoom in or out, with the mouse wheel

Currency
Energy is what you use to spawn zombies and Bone Collectors. Whenever you have enough energy, 10 at the start, you are able to click on the screen to spawn a zombie on the point that your cursor is on the map. After your energy is spent, it will slowly regenerate back to cap, starting off as 1 energy per second. Upgrades will allow you to increase your Max Energy and Energy per second. Energy is maxed when you start a level allowing you to cast spells before starting a level, like Energy Charge and Gigazombies. Once you build Cursed Graveyard it allows zombies to auto-spawn each time your energy reaches its max. Bone Collectors use one energy per second per collector.

Blood is the basic currency of the game. This can be gained from your zombies automatically fighting with humans. Out of the three resources gained from humans, blood is the most abundantly gained. Blood is used to buy a variety of perks for your zombies, however, it is mainly used to increase Zombies base attack damage and base hp. Blood max is increased from Brains and Bones upgrades as well as Prestige upgrades.

Brains are a higher tier currency gained from your Zombies killing Humans. Brains are used to get better upgrades for your zombies/better quality of life. This includes zombie move speed, energy cap/per second, blood cap, and much more. Brains are necessary to unlock Unholy Constructions. Brains max is increased from Blood and Bone upgrades as well as Prestige upgrades. Bones are the second most common resource also gained from killing humans. These only unlock after you get the Unholy Constructions perk from the brains tab and construct the Cursed Graveyard. Bones are used to buy upgrades similar to brains, however, they still have plenty of unique upgrades of its own. Bones have no limit to collecting. The rate of collecting can be raised with Prestige points.

Parts are a currency gained after you construct the Parts Factory. These are used to buy machines to make more parts or after you construct the Creature Factory build various golems and upgrades for them.

Prestige
After completing level 5, the Prestige tab will be unlocked. This page allows you to restart the game back to the beginning, collecting the prestige points you collected after completing a level. You get one point per number of the level completed so 1 point for level 1, 5 points for level 5 etc. Completing levels 1 to 49 gives you 1225 points. Prestige points are used to buy percentage-based upgrades to the amount of storage you can have of blood/brains, and the rate you get brains/blood/bones/parts. Other bonuses are:


 * A Small Investment - Each rank gives you an additional 500 Blood, 50 Brains and 200 Bones when starting each level. Starting Cost:  10 points increasing cost with each level.
 * Time Warp - Buys the Spell of Time Warp which speeds up the flow of time for 30 seconds with a cooldown of 90 seconds. Cost:  50 Points
 * Master of Death - Each rank reduces the energy cost of summoning a zombie by 1. Buy this upgrade 5 times at a cost of 1K Points each.
 * Blood Storage - Additional 20% blood storage for each rank. Starting Cost:  10 Points
 * Blood Rate - Additional 20% blood income rate for each rank. Starting Cost:  10 Points
 * Brain Storage - Additional 20% brain storage for each rank. Starting Cost:  10 Points
 * Brain Rate - Additional 20% brain income rate for each rank. Starting Cost:  10 Points
 * Bone Rate - Additional 20% bones income rate for each rank. Starting Cost:  10 Points
 * Parts Rate - Additional 20% creature parts income rate for each rank. Starting Cost:  10 Points
 * Auto Construction - Unlock the ability to automatically start construction of the cheapest available building option. Cost:  250 Points
 * Auto Shop - Unlock the ability to automatically purchase items from the shop. Cost:  250 Points
 * Graveyard Health - Additional 10% graveyard health during boss levels with each rank. Starting Cost:  146 Points