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Chip Defense

A tower defense game with a microprocessor theme
New in version 1.58
New features:
- Game can be exported and restored in the “settings” dialogue
- Game view can handle "edge-to-edge" (full screen) mode

Bug fixes:
- Fixed a problem with scrolling (issue #247)
- Corrected display of MEM chips with several internal registers (issue #233)
- Placing additional chips could result in an endless loop when creating a stage

Miscellaneous:
- Minimal SDK level changed from 21 to 23 (corresponding to Android 6)
- Inclusion of newer versions of some system libs.
Chip Defense is a casual game for Android devices of the tower defense genre. It centres around a design of electric circuits and logical chips, evoking the good ol' days of 8 bit micro-processors.

The attackers in this game are represented as bits and bytes. To defend the cpu against them, the player builds chips in designated slots. These "towers" deal damage by operations such as subtraction, right shift, bitwise and, etc. As usual in these games, the chips can be upgraded in strength.

The game features "heroes of the information age": persons that had great influence on the development of modern computers. They come with a short biography und provide global bonuses that make the game considerably easier.

Currently, there are more than 25 heroes and heroines. The game comes with 32 predefined levels, but it has also an "endless" mode with randomly generated levels. Supported languages are English, French, and German.

Supported operating system versions: From version 1.58 onwards, Android 6 or later is required. Devices running Android 5 (i.e. more than 10 years old) should use version 1.57.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 1.58 (58) suggested Added on Apr 19, 2026

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • de.chadenas.cpudefense.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 13 MiB PGP Signature | Build Log

  • New in version 1.57
    New features:
    - None.

    Bug fixes:
    - Disabled code optimization in order to avoid the app crashing

    Miscellaneous:
    - Use of target SDK 36

  • Version 1.57 (57) - Added on Apr 08, 2026

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • de.chadenas.cpudefense.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 13 MiB PGP Signature | Build Log

  • New in version 1.56
    New features:
    - The game view can be scaled using the "pinch" gesture.

    Bug fixes:
    - Corrected available chip types and number of waves for stages 22 and 32
    - Made the outline around active MEM chips more recognizable (issue #233).
    - Graphical stage layout tended to be rather elongated on large devices.

    Miscellaneous:
    - Heroes to go on holiday must be re-selected each time a leave level is entered (issue #210).

  • Version 1.56 (56) - Added on Apr 03, 2026

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • de.chadenas.cpudefense.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 10 MiB PGP Signature | Build Log