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Chip Defense

A tower defense game with a microprocessor theme
New in version 1.64
New features:
- The “buy multiple upgrades” button is available for all types of chips (issue #262)


Bug fixes:
- Hero requirements corrected to make Sid Meier available again (fixes issue #267)
- SHR and SHL had limited effect above a certain chip strength (fixes issue #265)
- ACC chips are redrawn after end of cooldown (fixes issue #264)

Miscellaneous:
- Swapped positions of the SELL and the multi-buy buttons for chip upgrades (fixes issue #263)
- Moved the “scroll lock” button to the top of
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 1.64 (64) suggested Added on Oct 14, 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 14 MiB PGP Signature | Build Log

  • New in version 1.63
    New features:
    - added buttons to buy several SUB or SHR chips at once
    - on the welcome screen, added a small LED block indicating the series

    Bug fixes:
    - corrected the avialbility constraint for Margaret Hamilton
    - corrected the layout for the "Reset all heroes?" dialogue
    - fixed another small bug in the memory bank view

    Miscellaneous:
    - New hero colour for Sid Meier. Also changed some of the hero availability conditions (see game wiki)
  • Version 1.63 (63) - Added on Sep 02, 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 14 MiB PGP Signature | Build Log

  • New in version 1.62
    New features:
    - New heroine for the ENDLESS series: Karen Spärck Jones. This hero increases the number of attackers using the same path, and thus make it easier to deal with them.

    Bug fixes:
    - fixed a game crash on systems running Android version lowers than 15 (issue #354)

    Miscellaneous:
    - Translations updated.
  • Version 1.62 (62) - Added on Aug 05, 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 14 MiB PGP Signature | Build Log