quotimperiumquot player wargame space empire conflict set nd century ad shortly release retconne history quottravellerquot role playing game simulate clash earth terra alien civilization represent form widespread empire ziru sirka side variety starship ground force choose game notable side asymmetrical force nt identical economy work differentlymovement take place jump star conflict resolve point type starship weaponry shortrange beam factor chiefly longrange missile factor planetary bombardmentreimplemente imperium rd millennium

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