Aliens - Features

• Two gameplay modes:
  • "Swooping" - Similar to the arcade game "Galaxian." The aliens hang around at the top of the screen and occasionally swoop down to attack you.
  • "Marching" - Similar to the arcade game "Space Invaders." The aliens march back and forth across the screen and come down towards you as a group.

• Built-in help
  Explains the gameplay, scoring, and controls

• Sound effects
  Buzzer-based sound effects

• Source included
  Aliens is an Open Source product, released under the GNU General Public License (GPL).

• Now part of Agenda!
  The folks from Agenda Computing liked it so much that it shipped with the Agenda VR3 PDA!