Mental Omega Wiki

Fighting for the Pacific Front.
—A brave Kappa Tank driver

The Kappa Hover Tank is the main battle tank of the Pacific Front. Unlike the other main battle tanks, it has hover propulsions, allowing it to float over water and participate in naval battles.

Official description

The Kappa is a creature from Japanese folklore known to dwell in bodies of water, preying on humans and cattle. Like its mythical brethren, the Kappa Tank can traverse any body of water with ease, allowing it to attack unsuspecting enemies from almost any direction. Many Soviet and Epsilon bases have fallen victim to the Kappa's ability to overwhelm an enemy through a shore line assault.

The Kappa takes a lot of engine power to keep it afloat and achieve speeds as high as the Robot Tank does, which comes with more difficulty due to this tank's larger weight and the fact that it is still a manned vehicle. However, due to the similar speeds, it makes a perfect companion to the Robot Tank.[1]


The Kappa Hover Tank is an amphibious main battle tank, able to seamlessly transition between land and water combat, therefore giving Pacific Front commanders great flexibility on the battlefield.

Kappa Tanks are effective against armored vehicles, ships and, structures. Using water traversing ability to their advantage, Kappa Tanks are capable of eliminating vehicles and structures that are normally inaccessible by ground forces. Kappa Tanks are also as capable on water as they are on land, often escorting ships and assaulting naval targets. Together with amphibious Robot Tanks, they are a significant threat in the waters.

Like all main battle tanks, Kappa Tanks are vulnerable to attacks from the air, as well as from anti-vehicle infantry. In the late game, Kappa Tanks are outmatched by monster tanks and heavy assault ships, but can still play a role in shoreline assaults or escorting duties due to its versatility. In addition, Kappa Tanks would sink if they happened to be disabled when over water, making them particularly susceptible against EMP or cryobeam weapons.

AI behavior

Kappa Tanks controlled by the AI have the following attack patterns:

All difficulties

  • 4x targeting vehicles
    • This task force will only be constructed if a Tech Center is not present
  • 4x targeting structures
  • 6x targeting vehicles


  • 3x targeting vehicles, accompanied by 2 Zephyrs
  • 6x targeting vehicles, accompanied by 4 Suppressors


  • 2x targeting anything, accompanied by 2 Tsurugis and 2 Robot Tanks
    • The AI may use Chronoboost on this task force
    • If available, Shadow Ring may also be applied


Kappa can cross water zones for a surprise attack or to stay away from threats.
—Allied intel during Operation: Digital Demon

Act One

Special Ops

  • In Eclipse, Kappa Tanks can be first controllable by Chinese as reinforcement unit. More can be built if an Allied War Factory is captured.
  • Kappa Tank is first available to build in Digital Demon, after acquiring any Pacific Front bases with a War Factory.



  • Effective against armored vehicles.
  • Can crush infantry and fire on the move.
  • Decent armor and firepower.
  • Amphibious.
  • Not as effective against infantry.
  • Vulnerable against aerial and anti-armor threats.
  • Inferior to heavy tanks.
  • EMP sinks them when over water.

Behind the scenes

The Kappa Tank's icon in version 3.0
  • During the development of 3.0, the Kappa Tank was known as the Predator Hover Tank and was going to be only available in the campaign.[2]
  • In 3.0 the Kappa Tank had a different model, less speed and more strength than the current iteration, and increased healing from the Backwarp support power.
    • On a related note, the voxel used in v3.0 is a public asset and can be used by other modders. The link can be found here.


  • Kappa (河童, かっぱ) is a yōkai (monster) in Japanese folklore known for being associated with people drowning in rivers and lakes. The literal translation of Kappa is 'the children who lives in the river'. '' means the river, '' means the children.[3]

See also