Empires & Allies

Islands

Each player owns an archipelago of five islands (with only part of one in the beginning) that functions similar to homesteads in FrontierVille, cities in CityVille, and farms in FarmVille, operating as a main area for player customization, as well as the production of materials, money, and military units. A player can visit a friend's island, or they can optionally invade and pillage their island. An island, however, can be defended with placement of military units (who must be on the island in order to be considered "deployed") which defend a small to large square area around them.

Each island houses many buildings, with a population cap. Population caps are increased by building government buildings which must be filled by allies. Population determines the availability of certain units and buildings.

Invading and Defending

Unique to Empires and Allies is the option of player versus player combat. Players can optionally attack other players who are above level 6 in order to gain resources, infamy points or prize tokens. A player who successfully invades another player can claim an "invasion zone" which they can loot every twelve hours for resources until the target player or an ally of the target repels their invasion, or upon the activation of the player's "world embassy". The buildings in the invaded area generate resources and infamy points for the invader, depending on the building. For instance, an oil well yields oil; housing, farms, and government buildings yield coins; lumber mills yield wood; and mines yield ore. All buildings, except government buildings; which yields 3 infamy points, gives 2 infamy points after a successful invasion. In addition, the target player of the invasion must spend extra energy to perform any maintenance on invaded territory. A player can become immune to attacks if he/she establishes a World Embassy. However they also may not attack another player (or the Embassy will be rendered useless) and must surrender any and all invaded territory. When a player forfeits the effect of the World Embassy, they may not activate it for another six hours.

The "Battle Blitz" mode has the same effects as the invasions of neighboring empires. However, the player invades other players who are on the same level as them. A player who claims an invasion zone in Battle Blitz gets five prize tokens, which could be used to spin the wheel for prizes.

Units and Combat

Combat is initiated whenever a player either attacks an AI commander during a campaign, attacks another player's island, or is repelling an enemy player's invasion of his/her island. Combat is turn based, and is not live. Instead, an invading player will combat another player's (or enemy AI commander's) military forces controlled by an AI. The player will always go first.

Combat begins with a 'deployment phase' in which a player can choose up to five (or less, depending on the situation) units to use in combat. After the deployment phase, units enter the combat phase. Every unit has three strengths which are marked with "great target," with higher chances of critical hits (which produce resource, experience, and energy bonuses, as well as extra damage,) if a unit attacks its specialty, this works in reverse effect, as a unit also has a weakness to any unit that shares its specialty. If a unit is of the same type as another, or is simply not directly related, they will have a "fair attack" in which they half an even chance of dealing normal damage as well as an even chance of a "glancing shot." If a unit attacks another unit which is strong towards it, it will be marked as a "poor target" which will usually produce a "glancing shot" with a 20% chance of producing a standard attack. In addition, if a unit deals a critical blow to destroy another unit, it will be marked as a "critical kill" with additional rewards such as extra money, experience, or even energy.

A commander also has the option of calling on an ally (when available) which is typically another player who, although not directly involved in the combat, may provide a powerup. A player can also use one of his stored attacks gained from previous levels and battles.

Players can also pause or forfeit battles, this may be due to low energy (every attack requires energy) or for cutting losses in an unwinnable match (such as having no specialties towards the enemies units.) All units are repaired after a battle, with optional in-game repairs requiring either a support powerup, an experimental unit, or a certain amount of "empire points" (real currency.) As of January 2012, the game has required a ransom of coins or resources of varying quantities depending of the type of units in battle and the number still surviving.

Many of the powerups can also be used to win battles with greater ease. They can be obtained by invading or helping neighbors in which the player would receive one random power-up from every level up, tasks completed from a toolbar on the left side of game screen, from the power-up factory (considering that parts have to be collected from allies to build the power-ups), and various other ways.

Survival Mode

In this mode player has to select 5 units or use the Titan to participate in a sixty-wave battle. Prizes are awarded every five waves, and elite units are awarded every 20 waves. The Epic Survival Mode is a battle against higher-ranked units, with rare units awarded every 20 levels. Now with every 20 waves you reach you get three units.

Units

Players establish four tiers of production buildings, including shipyards, barracks, and hangars to create sea, land, and air units respectively. After being produced, the player can deploy them on his or her archipelago to defend their buildings from invasion. Each unit casts a radius of defense(one square radius for land units, two square radius for air units and 2.5 square radius for sea units), so an invading player targeting a building within one or more of these radii, that invader must engage and destroy those defending units successfully to begin an occupation.

There are three "theaters" of war, Land, Navy, and Air. There are no special bonuses to these theaters against each other, yet they may attack each other, and typically units will have one speciality in each theater, one weakness, and one neutral. These units are based on actual military units, such as Flying Fortress bombers, MIG-17 fighters, and Sherman tanks. When your units are destroyed in combat, they yield a small amount of coins plus one oil.

Since the release of the game, Zynga has also created "special edition units" that have varying strength levels and are only available for a set amount of time. Some of these units are also based on existing weapons and vessels such as the USS Enterprise, but may have exaggerations in appearance to fit the cartoon-like figure of Zynga's games. Most of these units require purchase of their "blueprints" with real-world money through Zynga game cards and other methods of payment.

Campaign

Like other "Ville" games such as FrontierVille and CityVille, Empires and Allies has a common narrative that directs the player through the game's "story." Although Empires and Allies is an open ended game, it has a mission progression system that leads the player through features in the game, introducing new units or otherwise encouraging certain tasks, with rewards provided for completion. The game also contains a wider story arc which is progressed mainly through defeating enemy commanders on the "campaign map" which the player can access at any time. Ultimately, the player's goal is to finish the campaign and defeat "The Raven." A second campaign was released, titled "Molten Terror", which at the time have 8 groups of islands, but only four groups of islands are released.But most recently the four other islands are introduced,following the story of the Tiki Guy's escape during the last island on the first four group of islands.

Resources

The player must additionally manage resources on their island. Resources come in six types: coins, wood, oil, ores, empire points, and energy. Coins are a general resource for purchasing most in-game buildings, and are gained through property values (much like CityVille) and certain industries such as farms (unlike other "Ville" games, food is not a resource. Farm output is directly converted into coins.) Wood is used for certain buildings and resources, and is harvested by clearing trees and building lumber mills and starting lumber contracts. Oil is used for building practically any mechanized unit, it is harvested by oil wells. Ores come in varying types, such as aluminum, copper, gold, iron, and uranium, each required for different specialty units and buildings. Ore is harvested through ore mines, trading, and defeating other units. Empire tokens are real-world currency used to speed up certain elements of the game and assist in others (such as providing an extra ally during an attack or purchasing a power-up,) they can also auto-complete missions and fill seats in government buildings. In addition, defeating AI players provides liberty bonds which are used for land-expansion, along with coins. There are also experience points, which level up the player.

Tradable resources can be produced from lumber mills, oil derricks or mines which the player can build. Depending on the level of advance resource selected each operates with a different production efficiency.

Honor, Infamy and Domination Points

Honor and infamy is one of Empires and Allies' most defining features. Honor is produced by assisting other players, by visiting their empires or helping to defend, and is represented by a red heart. Honor improves rewards for helping players, as well as providing defensive power-ups when you level up in fame.

Infamy is produced by invading and looting other players, it's represented by a black heart and provides increasingly powerful offensive powers for use during combat when infamy is leveled up.

Domination points are produced by attacking and defending other players in the "World Domination" mode. The more domination points a player has, the more elite units he or she can build.

Decorations

Some Decorations provide bonus to military,housing and production structures when placed near them.