The infection must’ve peaked 20 years ago, in the initial wave. Nobody is quite sure what the infection is, the scientists didn’t have time to find out and no one left has the means for research. The world has lost 70% of its population, with most survivors being personnel in corrupt private militias, struggling farmers and hunters in strongholds, unorganized groups of bandits, and lone survivors fortunate enough to have stayed alive. The cities are practically untouchable, as the infected have overrun it, and most forests are constantly patrolled by whoever managed to claim it.
Please, tell about your character! They’ll get a mission, go through challenges, and meet very eccentric, strange people along the way. They can be basically anyone, no real restrictions.