Spruce Invaders is a clone of the popular 70s arcade game, Space Invaders.
As with the original, the object of Spruce Invaders is to blast away all the aliens off the screen before they reach the bottom of the screen. You use the directional buttons to move left and right and fire upwards using the '5' key. Be careful, because the aliens are gradually edging closer towards Earth.
Spruce Invaders is one of the most basic Space Invaders clones you'll play. The black and white graphics are very blocky and there isn't much visual variation among the enemies. The animation is also pretty bad (although let's not forget the original Space Invaders was pretty poor looking).
Playing Spruce Invaders is simple, addictive fun and it's the kind of game you can pick up and play without really thinking too much. That said, shooting all the baddies is still pretty difficult.
Spruce Invaders is worth installing if you're a fan of retro arcade games. Just be warned - it isn't pretty!