Chicken Invaders:

At the game's main menu, select the 3rd button from the top ("Options"). From the set of wide buttons you see, select the last one (not the short "help" button at the bottom of the screen). A window should pop up (it says "Please restart the game and select your new language"). Click on "OK" to close the window, then at the bottom-left "< Back" button, and again at the bottom-left "X Quit" button. Now restart the game and select the correct language.

Do you have a GeForce card? There are certain bad versions of GeForce drivers that cause this problem. This is a problem in the drivers themselves and is unfortunately completely outside our control.

The recommended way to fix this problem is to update your graphics card drivers (go to NVIDIA's web site for this). Alternatively, there is a workaround that alleviates or solves the slowdown problem altogether. Try this:

Right-click on your desktop and select "Properties". Go to the "Settings" tab and click on "Advanced...". Click on the "Troubleshooting" tab and move the slider to the left until it says that all DirectDraw and Direct3D accelerations have been disabled (around the middle of the range). Finally, click on "OK".

Note that this workaround might cause other games on your computer to slow down, so you may have to switch back and forth between settings, but it's certainly worth a try if you can't obtain an updated graphics driver.

Press the PAUSE key (near the top-right of your keyboard). If this doesn't work for you, you can achieve the same effect by pressing the ESC key (top-left of your keyboard) — just be careful you don't accidentally quit the game altogether when you return!

Windows XP's "sticky keys" accessibility feature interferes with games that use the Shift keys to fire. You will need to disable it. You can do this either from the dialog box that pops up when you press a Shift key 5 times in succession, or from Start/Control Panel/Accessibility Options/StickyKeys.

Your DirectX version is out of date (you need at least version 7.0). Download the latest version from Microsoft's web site here.

Again, your DirectX version is out of date (you need at least version 7.0). Download the latest version from Microsoft's web site here.

This message says that your computer can't switch to full-screen to play the game. There is no legitimate reason for this (unless you have another full-screen application running in the background). It is more likely a bug in certain video drivers (in conjunction with DirectX 7.0). Try updating your graphics card driver (check your manufacturer's web site) and/or DirectX version (here). Also, before running the game, shut down any instant messengers, and generally any program that may pop up a window. Check the system tray area (at the bottom right of your screen, next to the clock) and terminate any unnecessary programs.

Yes. From the main menu, select "options", then "controls". Click on each of the up/down/left/right/fire/missile controls, and then set your desired new control as follows:

• To use the keyboard, press the desired keyboard key.
• To use a joystick or gamepad, press a joystick button or move the stick in the appropriate direction.
• To use the mouse, click on the "use my mouse" button. This will set all of the controls for the chosen player to use the mouse. This option is only present in versions 2.55 to 2.72. For newer versions, the mouse is automatically used for the left player. If you have an older version, follow these instructions instead:
  • If you want to use a mouse button, simply press that button.
  • For directional controls, you will need to move your mouse all the way to one of the screen edges. For 'left', move the mouse all the way to the left. For 'right', move the mouse all the way to the right. For 'up', move the mouse all the way to the top. For 'down', move the mouse all the way to the bottom.

At the "start your engines!" screen, simply press fire on both players. By default, fire keys are "mouse button" (left player) and "left shift" (right player), although you can re-define them from the game menu (see above).

3.01

Retrofitted CI4 v4.11 changes.

3.00

Remastered Edition.

2.94

Weapons can now fire automatically by holding down the fire button (slower than manual fire).
Removed fade-in delay after returning to game from pause menu.

2.93

Game progress can now be saved and restored mid-mission.
Retrofitted UVE CI4 v4.05 changes (language/flags handling).
WAD compatibility broken (.preload files).

2.92

Retrofitted UVE CI4 v4.03 changes.

2.91

Removed MFC dependency (Windows only).
Re-added support for Asian languages (WAD file compatibility broken).

2.90

V-sync is now turned on by default.

2.89

Game now automatically pauses when focus is lost (only during a mission).
Retrofitted CI4 RPC and WM framework.
Corrected use of desktop resolution for progress bar during initial game launch.

2.88

Retrofitted CI4 changes:
Lost focus behaviour tweaked: 100ms between focus tests, 1000ms between cooperative level tests.

2.87

Profiles: Adding a new user can now be cancelled by pressing Esc.
Game now loads faster (30%-500%).

2.86

Refactored CI4 changes into uve/uvefx projects.
Added Intel AppUp support.

2.85

Refactored UveDX/UveXX project structure.

2.84

Fixed MemoryPackager corruption issue when loading configuration files.
Improved 'format helper' for authorization code entry.
Prevented accidental language selection when game starts.
Windows only: Corrected startup issue whereby game would lose focus before Uve was initialized.
Added 64-bit compatibility.
Default resolution is now back to 640x480.

2.83

Added support for touch control.
Default resolution is now 800x600.
Second player keys are now configurable in channel versions.
Windows only: OS Window style is now modified depending on fullscreen/windowed mode.

2.82

Added DPI-aware manifest to prevent scaling of window under high DPI settings.
Icon is now displayed correctly in task switcher (Windows XP).
Blank player names are no longer allowed.
Logging is now optional.
FOV is now hard-wired.

2.81

Added support for ANSI fonts (for things like player names).

2.80

Uses UveXX.

2.72

Added 256x256 Vista icon.

2.71

Retrofitted window framework from CI3 v3.53 and Alt-Tab behaviour from CI3 v3.51 (DX7) to support Restart Manager API.
Windows 95 is no longer supported.

2.70

Multi-language support.
Added "website" button on main menu.
Added "buy now" button (demo version only).
New installer & icon.

2.61

Settings can now be saved in common app data folder.

2.60

Minor update release.
Spaceship now follows mouse instantaneously (old control method still available).
Gamma ramp is now reset when starting up.
Fixed automatic fill-in of authorization code.
Installer compression is now LZMA (reduces download size).

2.55

Minor update release.
Mouse is now the default controller for the left player.

Added "use my mouse" button when configuring controls.

2.50

Major update release.
High scores can now be uploaded directly from within the game.
Added high score configuration menu.
Bonuses now can't be abused in two-player mode (charity, teamplay, destroyer).
Cutscenes can now also be skipped by pressing the fire button.
Improved Alt-Tab behaviour.
Redesigned font characters 'V' (to better distinguish it from 'U') and '1' (to better distinguish it from 'L') .
Fixed gradient of apostrophe character.
Added ellipses to button captions to indicate they lead to other menus.
Fixed planet Earth map (was flipped on X axis!).

2.40

Minor update release.
Fixed inconsistent (& slower) weapon firing rate (bug introduced in v2.30).
Veteran difficulty now scores 3x as much as rookie.
Increased security on high scores.
Minor tweaks to the documentation.
Fixed default weapon sound effect (was 8-bit) in demo version, too.

2.30

Major update release.
Fixed stereo panning for laser and neutron gun sound effects.
Fixed coin bounce bug (y-axis momentum was transferred to x-axis).
Reduced number of chicken legs gained by "appetite" bonus.
Fixed framerate timer behaviour under Windows 95.
Improved Alt-Tab behaviour.
Fixed default weapon sound effect (was 8-bit).
Fixed stereo panning in "accident" cutscene.
Added support for mouse controller.
Expanded documentation.
Veteran difficulty level now scores twice as much as rookie.
Double weapon & powerup bonuses are now available in veteran difficulty too.
Added pause button.
Recharge rate for neutron gun is now faster but projectiles are slightly slower.
Two bosses now appear at end of planet 3.
Chicken sarges now give 10 chicken legs instead of 5.
Logfile is now uninstalled, too.

2.20

Minor update release.
Replaced distribution file "file_id.diz" with "pad_file.xml".
Window frame is no longer drawn in full screen.

Asteroid explosions are now slightly larger.

2.10

First 'official' release.
Added "veteran" difficulty.

Fixed "desktop icon" installer bug.
Disabled duplicate assignment of control keys.
Various other enhancements.

2.00

Initial release.