There are different kinds of zombie apocalypses on Modd.io, which is a website for games.
To stay alive, you need to find food, and you can also find tools to protect yourself from zombies that are coming at you. Make sure to block every door and fill in any gaps in your walls with big things. You can use your character to push against barriers to keep them in place. You can buy upgrades and things, like a baseball bat and a crowbar, with the food you collect.
Have fun and good luck!
