On the financial end of the spectrum, there's "american dream" [1] by Stephen Lavelle [2], an enigmatic fellow who releases almost all his games as open-source. Putting you in the shoes of a trader, the game is a strong contender in the argument for treating video games as art with its subtle cultural commentary (even if I don't agree with some of it ;p).

[1] - https://www.increpare.com/game/american-dream.html

[2] - https://www.theguardian.com/technology/2015/apr/02/increpare...