The Guardian cannon was a 105mm gun protected by a forward-facing shield and mounted on a rotating platform. It was effective against vehicles, but ineffective against infantry. In addition to being a common sight at GDI bases, two of these weapons were also mounted on the battle base.
|Railguns||Provide a significant firepower bonus to Guardian cannon, nearly doubling its damage per shot output (Ctrl+S).||Purchasable at any Tech Center for $5000 ($4000 in Kane's Wrath) and takes 1:30 to research.|
The cannons are a good anti-tank defense, powerful though not as deadly or versatile as Nod's Laser Turrets. However, in Kane's Wrath, GDI and Steel Talons Guardian Cannons can be upgraded with Railguns, making them a viable defense even in the late game. Guardian Cannons can detect stealth units, so they are capable of being a good deterrent to Stealth Tank attack, as well as being able to support nearby units and base defenses in finding hidden enemies.
In Tiberium Wars, the Guardian Cannon has sluggish firing speed coupled with mediocre damage, making it less viable than the Predator tank even for defense. However in the Kane's Wrath expansion pack, the Guardian Cannon's firing rate has been doubled, turning it into a much more effective base defense. The cannon still suffers from a relatively short range, being, like any base defense, vulnerable to artillery. Long ranged units such as the Devourer tank and Avatar Warmech are also safe from Guardian Cannon fire. It is prone to being overwhelmed with masses of vehicles (though so are the equivalent basic anti-vehicle structures of the other factions), is easily outgunned and is generally cost-ineffective against heavy assault vehicles like the Annihilator Tripod or Mammoth Tank, hardly damages most infantry types, and lacks any any anti-air capability. Guardian Turrets tend to be unpopular with GDI commanders since their Predator tanks already can outgun enemy armor early on, are mobile, and do not require power to operate, although they do not have the sheer armor and firepower of the Guardian Turret; investing in more tanks which are adequate for both defense and offense takes priority over sheer defense in many circumstances. In the early game, however, it can still be an important defense, particularly in GDI-on-GDI battles, where both sides are more likely to take an armor-superiority approach to victory and the Guardian Turret's cost effectiveness on defense will come into play.
The standard Guardian Cannon can be reliably described as one of the less effective base defenses in the game, typical of GDI designs; GDI tends to supplement their base defenses with their vehicular superiority in armor and firepower. It is still a cost efficient defense against mid-level units such as regular tanks (except for Devourer Tanks, which outrange it) and light vehicles, however, providing that it isn't being overwhelmed. If it is upgraded to use Railguns it becomes markedly more effective, making it a very good defense against light and medium units and decent against heavy ones, while giving it some noticeable ability to kill infantry.
- Tiberium Wars patch 1.05:
- now cannot miss against moving enemy vehicles.
- added recoil effect
- Kane's Wrath patch 1.02: damage increased from 175 to 200
- In the game files, it sometimes referred to as the Golem cannon.
- The Guardian Cannon's buildup animation does not play at all when the game's animation quality settings are set to low. For the animation's duration, the cannon is completely invisible.