For a game where you are a ruler of a small country (dictator) and you accept bribes (to your personal funds/swiss account). The question is what is the purpose of these bribes.
I have seen it implemented in 2 games:
* In Dictator on ZX-Spectrum your personal wealth was one of the scoring component, the game was survival and the goal was to steal as much as you can while you rule as long as you can before you escaped to another country.
* In Tropico it was some sort of "side quest", or some bragging rights number (it basicly had no use at all, just it grew and you could see it and get a steam achievement), it carries over between sceanrios in a campaign. In a few scenarios you were required to get a certain amount of bribes. Overall, it had no purpose whatsoever.