A game with shooter, strategy, and exploration elements, The Last Stand 2 will eat away more of your time than most other titles on this list.
When the sun sets, you’ll defend your fort from waves of rushing (and sometimes shuffling) zombies. Come the morning, you’ll set out about town in search of weapons, supplies, and survivors that can be equipped with weapons to aid your defensive efforts. As you accumulate enough supplies, you can travel to a different town on the road to rescue.
If you can’t reach the Union City docks within 40 days, you’re zombie chow.