Been bouncing ideas with friends for a little while, but don't know what to do quite yet. Here's what I've got:

• Deck building game about the stock market. Uses a single shared deck to determine market events (which players can manipulate by purchasing new cards to add to the deck). Players use their money to invest. Falling in the red is elimination from the game.
• D&D 5e expansion (or maybe standalone homebrew game) about merchant guilds. The strength/influence of a guild is determined by their net worth.
• Board game about competing megacorps trying to siphon funds and conduct corporate espionage on each other in order to dominate an economic sector.
• Board game about earth elemental warriors literally selling parts of their own body's various raw ores and stone in order to purchase equipment to defeat rival warriors.
• Something about mimics and their health being equal to how much money/treasure they have eaten.