Anywhere
Town of the Undead is a zombie survival sim that works with no internet at all. No login, no server, no "connecting…" screen. Install it once and it plays on the plane, on the metro, in the countryside, or with mobile data switched off to save the battery.
Ten minutes of calm, then a horde that's over in a minute or so. The garden, the grill and the animals keep going while the game is closed, so a session on a commute always has something waiting: crops to pick, a neighbor's story, the morning paper on the porch.
A house to rebuild, a yard to farm, two dozen neighbors to rescue, a town to restore, and seven places to drive to in Mabel, the old car: the truck stop, Oakdale, Miller Farm, the Pine Hollow woods, Radio Tower Ridge, Hollow Creek and Sterling City. 30 levels of story, then New Game+. All of it offline, all of it for one price.