Hostile alien spawn have infested the planet of Kerrus. Wipe them out!


Hostile Spawn Features
  • Play all ten 'Kerrus' levels;
  • Access to 7 weapons, including the CRAG, flamethrower and rail gun;
  • Earn 15+ Achievements;
  • Normal and Hard mode of play;
  • Play for FREE!


After the UFE Starship Hammerhead failed to report on its mission, you were sent in to investigate. As you searched the now abandoned ship you discovered the festering presence of an alien spawn...and they're hostile!

Take up your standard issue auto gun and cleanse the Hammerhead, then descend to the surface of the planet Kerrus to wipe out the infestation at its source...with the help of a few more powerful weapons.


1. How do I regain health?

When you advance a rank, some of your health is replenished and your maximum health increases. If you find yourself running low on health, there are health packs on some of the levels. Walking over a health pack will recover some of your character's health.

2. How does the rank system work?

As you earn points, a thin yellow gauge below your rank fills up. When it is full, you advance to the next rank (and get a health boost) and the gauge empties again. Over time this gauge will decrease, so it's in your best interests to keep advancing and killing aliens.

3. What is Hard mode and where do I access it?

Both the 'Kerrus' and 'Vengeance' sets of levels have a hard mode which is unlocked after you have completed them on the default difficult.

In Hard mode on 'Kerrus', you have to complete the planet-based levels (levels 4-10) within a strict time limit, that being double whatever each level's par time is. In Hard mode on 'Vengeance' (levels 5-10), the same difficult time limit applies.

4. Which weapons am I using?

The weapon currently assigned to the left mouse button is displayed in the top left corner of the screen, and the weapon currently assigned to the right mouse button is displayed in the top right corner of the screen. The number in each icon is the amount of ammunition you have for that weapon.

You can pick up all weapons that you find by simply walking over to them. For each new weapon an icon will be added to the list displayed at the top of the screen. A simple way to equip a different weapon for use is to click the icon with the mouse button you would like to assign the weapon to.

5. Why does ammo decrease for one of my weapons when I'm using the other?

Certain weapons share an ammunition type. The auto gun and C.R.A.G. use the same type of projectile ammunition. The plasma cannon and railgun both use energy cells as their source of ammunition. However, each weapon uses differing amounts of ammunition per shot.

6. I can't get used to the controls!

There are two control methods in the game. The first method moves the marine in relation to the screen; the second method moves the marine in relation to the mouse cursor. These two methods can be switched between with the 'TAB' key. Try out both to see which suits your play style best. Also, you can choose between using either the WASD keys or your keyboard's arrow keys for movement.

7. What are the minimum specifications for this game?

The minimum specifications we recommend for this game are:

  • 1.0 GHz
  • 128 MB RAM

The recommended specifications for getting the most out of this game are:

  • 1.5 GHz
  • 256 MB RAM

Below is an explanation of the terms in our technical specifications.

Megahertz (MHz) / Gigahertz (GHz) is a measure of how fast your computer's processor is. This affects how quickly you can run things like games and applications.

Megabytes (MB) are used to measure how much memory your computer has. This affects how quickly your computer runs when using large programs such as games, or when you run a lot of programs at once.

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FunOrb Members' Benefits

Members get:

  • Access to the Vengeance Expansion - 10 additional levels set in a new location;
  • Hard mode of play in the Vengeance Expansion;
  • The mighty Grenade Launcher weapon;
  • Powerful Blast Charges to obliterate destructible walls;
  • Health Packs to replenish your health;
  • Security Passes for entry through locked doors;
  • 3 new enemy spawn including the Vengeance Queen;
  • Fullscreen mode;
  • Access to 20+ further achievements;
  • No adverts during gameplay;
  • Complete access to all members-only content on FunOrb.

Development Team

Development: Thomas D, David R, Ben W
Graphics: Peter S, Anthony A, Adam S, Jess H, David H
Audio: Adam R, Ian T
Quality Assurance: Ken W L, Joe C, Michael T, Sally R, Alex P
Editing: Sally R, Michael T, Stephen R

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