Everything a commander needs to know
Buildings, research, ships, defense, the Synth network, aliens and more – explained clearly, with level tables, combat stats and tips for every stage of your empire.
Topics
Help right inside the game
Many pages in the game show a ? in a circle at the top right. One click opens exactly the matching wiki page without leaving the game. You can open the full wiki at any time via the SI Classic Wiki menu entry.
Popular pages
Playing SpaceInvasion 2?
SpaceInvasion 2 is a separate game with its own wiki. Many things work differently there – for example it has alien planets and data discs, but no Synth network and no asteroids.