OpenSpades is a compatible client of Ace of Spades 0.75.

• Can connect to a vanilla/pyspades/pysnip server.
• Uses OpenGL/AL for better visuals.
• Open source, and cross platform.

1. sudo apt-get install pkg-config libsdl1.2-dev libfltk1.3-dev libglew-dev (because of a bug in some distributions, you might also have to install more packages by sudo apt-get install libjpeg-dev libxinerama-dev libxft-dev)
2. ./autogen.sh && ./configure PKG_CONFIG=pkg-config && make
3. sudo make install
4. Download windows binary of OpenSpades from https://sites.google.com/a/yvt.jp/openspades/downloads, extract it, and copy the .pak files inside Resources directory into /usr/local/share/openspades/Resources or ~/.openspades/Resources
5. openspades and enjoy

Please see the file called LICENSE.

Note that other assets including sounds and models are not open source.