criticalmass-data software package provides Shoot-em-up a la galaxian (data files), you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install criticalmass-data
criticalmass-data is installed in your system.
Make ensure the criticalmass-data package were installed using the commands given below,
$ sudo dpkg-query -l | grep criticalmass-data *
You will get with criticalmass-data package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Games |
| Package | criticalmass-data |
| Version | 1:1.0.0-1.5 |
| Description | Shoot-em-up a la galaxian (data files) |
| Sub Section | Games |