Gloomy Dungeons 2 is also opensourced!
Check it out - https://github.com/restorer/gloomy-dungeons-2

What is it?

It is old-school 3d shooter, indie game developed by small team. It didn't use hi-end engine, so it looks more like wolf-3d than quake or even doom. As side effect, it works on low-end phones pretty fast. It has big sexy square pixels (love)... You should really love pixelart (like me :)

Code: restorer
Old-school graphics: www.nongnu.org/freedoom, www.lostgarden.com, restorer
Modern graphics: Denis Smoktunovich (smoktunovich@gmail.com)
Levels: zin (zin.wtf@gmail.com), restorer
Texts: zin (zin.wtf@gmail.com), restorer
Sound: www.nongnu.org/freedoom

This game is released under MIT License (http://www.opensource.org/licenses/mit-license.php).

Product support

This product is already finished, so no long support is planned.

Feature	Support status
New features	No
Non-critical bugfixes	No
Critical bugfixes	Yes, if it will be easy to understand where to fix
Pull requests	Accepted (after review)
Issues	Monitored, but if you want to change something - submit a pull request
Android version planned to support	Up to 8.x
Estimated end-of-life	Up to 2018

Compiling

There are 2 version of game: normal version and hard oldschool version. You can compile either by using build script or directly using gradle.

Compile and install debug build

Normal version:

./gradlew installFdroidnormalNormalWithoutanalyticsWithoutzeemoteWithoutrateofferDebug

Hardcore version:

./gradlew installFdroidhardcoreHardcoreWithoutanalyticsWithoutzeemoteWithoutrateofferDebug

Compile release builds

To be able to compile release builds, create put your keystore file (or create new) to tools/signing.keystore and create tools/signing.properties:

keyAlias=put_key_alias_here
storePassword=put_keystore_password_here
keyPassword=put_key_password_here