Illinois
Chicago has 18 game companies.
Champaign has 3 game companies.
Vernon Hills has 1 game company.
Lincolnshire has 1 game company.
Aurora has 1 game company.
Melrose Park has 1 game company.
Skokie has 1 game company.
Lemont has 1 game company.
Palatine has 1 game company.
Hoffman Estates has 1 game company.
Glen Carbon has 1 game company.
Morton Grove has 1 game company.