Saber Interactive and Focus Home today revealed the completely free post-launch content plan of World War Z, a cooperative Zombesco title that reached a million units sold in the first week of launch. The team has to offer, month after month, new game modes, content, features and enhancements for fans of the title, starting from the "season One" scheduled from May to July.

In May, a brand new mission set in Tokyo will be available along with a terrifying type of zombie that spews a deadly virus and can return to life if not properly killed. In June there will be a new difficulty in six skulls with a unique reward, plus cosmetic bonuses and more. In July players will be able to discover the new Weekly Challenge mode, as well as cosmetics and other extras.

Other important upgrades, still being developed for additional free upgrades, include a wave-based survival mode, private lobby, the ability to change classes during PvPvZ matches and more.