Several websites host older or modified versions of strategy games that run via HTML5 or web emulators. To find these:
While often sought for entertainment, "unblocked" access to Plague Inc. can be framed as an academic exercise in several fields: Plague Inc Evolved Unblocked
Some unblocked guides simply provide a proxy URL to bypass your network filter and reach the official Steam or Ndemic Creations store page. This allows you to buy the game but doesn't make it free. Several websites host older or modified versions of
Plague Inc: Evolved is a high-strategy, realistic simulation where your objective is to create and evolve a pathogen to exterminate humanity before they can develop a cure. Rebuilt for PC and consoles from the original mobile hit, it expands the experience with 3D graphics, multiplayer modes, and deep statistical analysis. This allows you to buy the game but doesn't make it free