When starting a new game, the player normally begins with a lone Commander. The Commander is a powerful and irreplaceable unit that has a number of unique abilities such as a destructor weapon that vaporizes anything it hits, the ability to use cloaking and become invisible, and the ability to travel through bodies of water. Construction is governed by the possession of the game's two unlimited resources, Metal and Energy, and can be undertaken by factories or mobile construction units. Every unit belongs to a level of technology (tech level); the higher the level, the more advanced the unit and the more resources and thus time required to construct it. A feature of the game is the ability to easily "queue" the many commands for a unit or group of units, with types of commands including patrolling a route, constructing a defensive group of structures and attacking enemy units. Once given its commands, the unit will go about them automatically thus minimizing the need for the player's attention to small, repetitive tasks. The victory conditions of a multiplayer game generally involve the elimination of all enemy units, but the aim of single player campaign missions can be more specialized.
Resources
g that they are accumulated at a constant rate rather than in small batches; and they are limitless. In addition, all units and structures have a fixed cost, but they build at varying rates depending on the unit constructing them. A Commander, for example, will build a structure three times faster than a construction vehicle, but at a higher cost in energy. If the rate at which resources are used exceeds the rate at which resources are acquired, then the player's reserves will begin to be depleted. If a player's reserves are entirely depleted, the player's production across the board will slow to a rate proportional to the amount by which outflow exceeds income, this is known as "nanostalling". In addition, if the player runs out of energy, power-dependent structures such as radar towers, metal extractors, and laser towers will cease to function. This adds an element of economic complexity unparalleled in most RTS games of the time period. When a unit or structure is destroyed, it leaves behind wreckage that may be reclaimed for a lump sum of metal. Many terrain structures may also be reclaimed for their metal. Some maps also have plants or other organic structures that can be reclaimed for energy.
Combat
The player can command a variety of units including infantry bots, vehicles, ships, hovercraft, aircraft, powerful stationary long range weapons, and even a giant mecha known as the Core Krogoth. Units vary in size, speed and the ability to give and take damage, depending on their tech level. The strongest units take longer to build as well as cost more resources. Each unit has strengths and weaknesses, optimal styles of use, and corresponding units against which it is vulnerable or well-suited. Effective play is usually characterized by consideration of these attributes, as well as efficient resource management, strong defenses, and knowledge of the opponent's strategies. The game's interface consists of construction and command buttons (depending on the unit selected), unit status information, resource information on the production of Energy and Metal, and a minimap which gives an overview of the game's battlespace – the visibility of which may be hindered by fog of war, necessitating the use of radar or scout units. There are a few highly advanced units which are invaluable combat-wise, such as nuclear missile launchers which have enormous range and very high damage, as well as long-range artillery that have enough range to attack any point on smaller maps. There are two story-related factions, Arm and Core, which have comparable sets of units (one side a little bit faster, other one a little bit tougher etc.), but are aesthetically different. Generally, the Arm have faster, sleeker units while the Core units are built to take slightly more punishment. This is shown exceptionally well by the Arm being able to build an extremely fast Kbot known as the Zipper, while the Core can build an armored Kbot known simply as The Can. When playing amongst experienced players, subtle differences between the two factions put Core players at a disadvantage. The most noticeable differences are as follows: The level 1 Arm fighter aircraft is 1.7× more maneuverable than its Core counterpart, the Arm commander walks 1.12× faster than the Core commander, amphibious Arm Kbots float above water, making them faster and more useful than their submerging Core counterparts, Arm players can build Farks, fast assistant repair Kbots which can be crowded around labs and structures to dramatically reduce build times, and level 1 Arm tanks are equipped with superior weapons. Core has some distinct advantage as well, such as superior naval units, level 1 bombers that drop more bombs, and less conspicuous nuclear facilities. These advantages, however, are overshadowed by the Arm advantages in most situations.
