According to developer Massive Damage, "the first-of-its-kind location-based massively multiplayer zombie apocalypse survival game" Please Stay Calm has successfully infected the Canadian App Store.

Set in the year 2014, Please Stay Calm sees you attempt to survive a zombie apocalypse and begin to restore the world to its former glory.

This involves exploring your neighbourhood and destroying the undead, pillaging essential supplies from real-world locations, and mastering several tactical mini-games.

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As you can't complete your mission alone, you'll have to chat and work with other local survivors to construct safe houses, and buy, upgrade, and utilise a selection of powerful weaponry.

Please Stay Calm is an episodic adventure that will be frequently updated with new chapters, higher levels, more mini-games, extra weapons, bloodthirsty zombies, story quests, and more.

The game will roll out across the US in October, and will find its way to the rest of the world some time afterwards.

You can pick it up right now from the Canadian App Store for free, or check out the website for more details.