Version 0.86 added the ability to unlock some Market items with Brains earlier than the item's level requirement. Every +1 higher level costs 1 Brain. (For example; when you're at level 10, a level 12 item's unlocking will cost 2, a lv 16 item's unlocking will cost 6 Brains) Zombies and Functional Items (except Storage and Clay Monolith) cannot be unlocked early.
Your zombies can't be brought to life by will alone. No, you need Life Force. Life Force is essentially a measure about how much "life" or vitality your farm has. Trees are an excellent source of Life Source, although many Decor can also supply it as well. Life Force is displayed as an integer at the top of the screen next to the leaf icon, and also on every item (e.g., "+7 life force")
Life Force does not affect plants, it is what drives in harvesting and mutating zombies. The success of both processes is majorly affected by how much Life Force you have; with low life force, you are apt to have many lifeless zombies (a zombie that is lost because of a lack of Life Force) and are very unlikely to get successful mutations. You also need a certain amount of Life Force to be able to use abilities in battle.
Time is what Zombie Farm is based on. Time is what you wait on for your plants and zombies to grow, time is what designates the scenes of Rain or Snow, Day, and Night.
"Raaaaaaaain...It's every zombie's favorite weather!"
The message plays on the how close the word "rain" is to "brain", which explains why it is the favorite weather of zombies.
Time is one of the key elements in Zombie Farm, and is a very important part of Basic Gameplay. Time is adjusted by your iDevice's internal clock. Day begins at 5AM and ends at 9:59, Night ranges from 6PM to 4:59AM. Depending on what time it is, your zombies could be running around in the sunlight or creeping around in the dark of night. Day and Night have noeffect on anything stat-wise, however, the only effect added with Day and Night is that some items now have a glow effect at night, along with your Farmer having a permanent glow effect on him/her. The Night time feature can be disabled in the Options Menu via the Main Menu.
Save iconZombie Farm is designed to auto save when you leave the game, but this doesn't always work, so you can have to replant a field of crops, or even lose a whole field of crops that you already harvested.
So to be on the safe side, it's usually best to manually save by pressing the main menu button (in the top left corner) and press Save Game. This will ensure that you what you see before pressing this button is exactly what you see after you get into your farm next time.
With Version 0.80, Game Center saving is enabled. This means that the game will automatically back-up your game online, allowing you to transfer your Farm to any iDevice with Game Center enabled. The only downside to this is that you MUSTbe online to save with Game Center. If you plan on going out of a wireless zone for a long period of time, go into your options menu via Main Menu/Options and then turn off Game Center otherwise you will receive MANY"Cannot connect, game was not saved" messages which can result in a game crash.