Thought I'd mention this, they added STEAM Workshop support to the game.

Also, they have added a ton to the game:
  • 10 Different Disease Types – Master every pathogen; from bacteria to bio-weapons and mind control to zombies, end humanity by any means possible – different diseases will need radically different approaches.
  • Infectious Multiplayer – Cooperative and Competitive gameplay; team up to fight the cure with friends, or compete in a race to kill the world.
  • Contagious Content Creator – Hit the lab; develop your own custom scenarios - creating new plague types and worlds. Bring your deadliest ideas to life and share them with Steam Workshop.
  • 18 Unique Scenarios – Adapt your strategy; scenarios create further challenges for your pandemic – how will you handle a new strain of Swine Flu, or infect a world in Ice Age?
  • Stunning Graphical Features – Watch your disease take hold; witness your pathogen mutate in real-time disease models, see humanity's struggle at street-level on city-cams, and watch the full effect of your mutations organ-by-organ on the body scanner.
  • Hyper-Realistic World – Strategize in the real world; advanced AI and use of real-world data and events make Plague Inc: Evolved a highly authentic simulation of a world-ending pathogen. Even the CDC likes it!
  • Deadly Data - Geek out with stats and graphs; monitor infection and death levels, track government reactions and cure efforts, then review your plague's success (or failure!) with full game replays.
  • And much more... - Including speed runs, Mega-Brutal difficulty and genetic modification... Plus loads of new disease types and scenarios in future (free!) updates.