Complexity level 8 on Tsukuda's 1-6 scale (1=easiest).. Um, apparently that rating scale goes to 8. At any rate, this game is complex.
Game length is stated on the box as 4-25 hours, and is strategic in nature.
Inspired by 'hard science fiction' novels. This is an attempt, according to the designer, to make what he considers a 'true science fiction game', instead of the usual robot-anime SF games released in Japan before then, which he considered to not have as much variety ('items'). This game is not a simple 'counters representing units', type. Among the 900 counters there are ones for 'sabotage', 'industry network', 'colonist labor base, riot', 'demonstration', 'malfunction', and 'products' as well as troop counters.