隠居軍師の救国ストラテジー

How a Retired Strategist Saved the Country is a real time strategy game where you manage resources to develop a small settlement and defend it from several enemy waves.

The player, a retired strategist living in a humble village, is asked by elves, beastmen, mages... for help, taking command of their army in exchange for some payment and sex, becoming more famous and with stronger units and better buildings with each victory.

[Edited from English DLsite]