Viruses are one of the seven basic pathogens of Plague Inc. Viruses can be unlocked by completing Bacteria mode on the Normal or Brutal difficulty. Viruses are capable of mutating more frequently than other pathogens. His special ability, Viral Instability, increases the chance of mutations making it difficult for viruses to spread before they become lethal.
Step
Part 1 of 3: Creating Virus
Step 1. Choose the gene (gene) of the virus
You can choose any gene as long as it doesn't affect the strategy too much. The following are some of the recommended genes:
- DNA Gene - Metabolic Jump
- Travel Gene - Native Biome/Teracyte
- Evolution Gene - Sympto-Stasis
- Mutation Gene - Genetic Mimic
- Environment Gene – Extremophile (or whatever is already open)
Step 2. Select China as the starting country
This country is one of the ideal locations to spread the epidemic quickly because China's population is one of the largest and can transmit the epidemic to neighboring countries quickly. The virus can also spread to other countries more quickly and easily through airports and ports in China.
Step 3. Immediately devolve the deadly symptoms
Viruses will mutate quickly so you must immediately devolve any deadly symptoms that mutate too quickly.
Part 2 of 3: Spreading the Plague
Step 1. Start with the basic infectious symptoms
These basic symptoms are important to help spread the virus as quickly as possible because you will be racing with the mutations that appear. Focus on the following symptoms:
- Rash
- Skin Lesions
- Sweating
- Sneezing
- Coughing
Step 2. Develop transmission
You must spread the virus quickly before it mutates. Start with basic transmission skills. In order for the virus to cross countries via planes or ships, upgrade Air and Water. Upgrade the following transmissions in order:
- Water 1
- Water 1
- Drug Resistance 1
- Water 2
- Water 2
- Extreme Bioaerosol
Step 3. Increase more infectious symptoms
Return to the symptom screen and upgrade any non-lethal symptoms.
Step 4. Devolve on deadly symptoms
Make sure you always devolve every deadly symptom before it causes a lot of damage.
Step 5. Increase virus resistance
You must strengthen the virus to survive the extreme climate and slow healing. Develop the following abilities:
- Cold 1
- Heat 1
Step 6. Develop another transmission
We recommend that you actively spread the virus now. Most parts of China as well as other countries must have been infected. Develop the following abilities:
- Birds 1 and 2
- Livestock 1 and 2
- Blood 1 and 2
Step 7. Increase your symptoms
Now is the time for the virus to become even more deadly. Develop some slightly lethal symptoms like Paralysis or Coma. With this, you can develop another very deadly symptom.
Part 3 of 3: Wiping Out a Population
Step 1. Amplify the virus
Make the virus a little stronger before releasing all of its capabilities to slow down the treatment. Develop the following abilities:
Genetic Hardening 1 and 2
Step 2. Develop more symptoms and transmissions
At this point, most of Earth's inhabitants should have been infected and you have unused DNA points. Use these points to increase slightly lethal symptoms and transmissions.
Step 3. Wait until everyone is infected
You don't want the virus to become so deadly before everyone else is infected. If the virus becomes deadly too quickly, all infected people will die before infecting all healthy people.
Step 4. Develop as many lethal symptoms as possible
Once everyone is infected, develop as many lethal symptoms as possible. Start with Total Organ Failure and Necrosis, then continue with Internal Hemorrhaging and other very lethal symptoms.
Step 5. Slow down the treatment
If the treatment rate starts to rise, use the Genetic ReShuffle ability to slow it down. You shouldn't worry too much about this if you've spread the plague well early in the game.
