My LD 23 Jam entry
Welcome to Switzerland!
You manage two resources that give you complete control over the entire country: banks, and real estate.
You can adjust rents for apartments, create different loan plans, adjust interest rates.
To make the game more interesting, even though you are a single entity, you can create multiple brands to create the illusion of competition.
You have a population of citizen, which all have their own free will. They have a basic income which they can choose to spend on various things.
Apartments and loan plans can be advertised: it costs to advertise but then citizens are more likely to be aware of it.