Difficult to shoehorn my idea into this 😕 I’m not delighted with the theme, but I am already semi-committed… My game is going to be about managing certain aspects of a business so I think I need to approach the theme using appropriate dictionary definitions.

Monster (with variants from dictionary.com):

• a person who excites horror by wickedness, cruelty, etc.
• any animal or thing huge in size.
• huge; enormous; monstrous
• a cruel, wicked, or inhuman person
• a very large person, animal, or thing
• to use intimidating tactics against (an opponent)
• Enormous; overwhelming; humongous:
• Very good; cool, killer, rad
• extraordinarily great; huge; immense

So the theme connection is probably that you are trying to create a huge, cool corporation using intimidating tactics.