The Game Beyond by Melissa Scott

A star-flung empire the prize-in a deadly war of succession
The Silvertree Empress is dead, the last of her line. The heir named in her will is an impossibility, her favorite, Keira Renault, member of a family deposed and disgraced generations before-the man she claimed as the power behind her throne. As the Empire's notables jockey for position behind the various claimants, Keira must defeat his rivals in simulation and reality-and somehow hold the factions together long enough for the Empire to survive.

https://rapidgator.net/file/d8c2e9825c60a19c634ad3e5158ac19d/

http://alfafile.net/file/8m3MN