After trying Beat Survival for free and want to get more contains and features, then its's time to get DLC Expansion.
This DLC Expansion adds a ton of new content, and some updated quality of features such as:
* Double extension map
* More enemies and characters (zombies' type, NPCs, animals)
* More items (consume and craft)
* Additional skills
* Implemented stories and missions
* Additional vehicles
And more!