The game is played on two maps, the tactical map and the strategical map, on which the fleets of space ships belonging to the Empire and the invading Aliens move. The "Zoom" effect of having two maps makes it possible to carry out each conflict between fleets as a little space battles each of which is a game in itself. Parts of the game: -Rigid, plastic cardboard box printed in 5 colors, giving the indications of the number and age of players, the duration of the game, the level of difficulty and the historical setting. -Pieces representing the various fleets and space ships in matte finish cardboard cut and printed on both sides. -1 deck of identifying cards for the various solar systems. -1 rule booklet in 4 languages with examples. -1 tactical map in rigid thick cardboard. -1 strategic map in rigid thick cardboard. -3 tables to indicate the points earned during the game. -Transparent plastic storage tray and dice.