Install dangen by entering the following commands in the terminal:
sudo apt update sudo apt install dangen
Description:
shoot 'em up game where accurate shooting matters
dangen is a shoot 'em up game that attach importance to accuracy of shooting. With the combination of the cursor key and the shot button, you can shoot at your side or even at your back. Get the bonus point by hitting the enemy without a miss. You can choose stages of different difficulty.
Homepage: http://www.interq.or.jp/libra/oohara/dangen/index.html
Version: 0.5-4build1
Section: universe/games