It depends on your personal preferences. Plague Inc. Premium offers additional features and content compared to the free version, including scenarios, genetic modification, and more customization options. If you enjoy the game and want access to these extra features, then purchasing the premium version may be worth it for you. However, if you are satisfied with the free version and don't feel the need for the additional content, then it may not be necessary to buy the premium version. **

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In Plague Inc, players take on the role of a pathogen trying to infect and wipe out the world's population. The goal is to evolve the pathogen in order to increase its infectivity, severity, and lethality. Players must strategize on how to spread the disease effectively while also combating efforts by humans to develop a cure. The game involves a combination of planning, decision-making, and adapting to changing circumstances in order to successfully infect and eliminate humanity. **

To unlock Plague Inc, you can download the game from the app store on your mobile device or purchase it on a gaming platform such as Steam. Once you have downloaded the game, you can start playing and unlocking additional content by progressing through the game and completing various challenges. As you play, you will also have the option to purchase additional features and content within the game. **

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Plague Inc may crash for a variety of reasons, including software bugs, compatibility issues with the device or operating system, or insufficient memory or processing power. It is also possible that the game may crash due to corrupted game files or conflicts with other apps running in the background. To address these issues, players can try updating their device's operating system, clearing the game's cache, closing background apps, or contacting the game's support team for assistance. **