"Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself."

v0.8.0 changelog:
New Additions
- Scenario Creator tool added
- Custom Scenario Functionality
- Steam Workshop Compatibility
Tweaks
- Refactored game code (in preparation for Multiplayer)
- Improved video setting text file to allow trailer to be enabled/diabled
- On-mouse over text in locked plague types in Official Scenarios now informs player that they need to play in main game to unlock
Fixes
- Locked plague types don't display under official scenarios where they can't be selected.
- Fixed symptom event in Black Death
- Closing expanded country text pop-up fixed.
- XML errors fixed.

For the full changelog, view changelog.txt.

If you like the game, support the developer, buy it.  
http://store.steampowered.com/app/246620