In my region, salary lotteries are very popular in many workplaces. I don't know what's the exact English term for his but we call it that name. The purpose of salary lottery is that 5-6 employees collect together and they play lottery. The first winner gets the salary of every worker, in the next months the second winner gets everyone's salary and that's it. There isn't a random winner, everyone gets their salary back but the fate of who is the first person to receive the salary is decided via a simple coin flip.
For example, imagine that there are 6 people and salary of each person is $1000. They determine via coin flip who is the 1st, 2nd, 3rd, 4th, 5th and 6th. First gets $6000 in the end of the month, in the next month, the second gets $6000 and in 6th month, the 6th person gets $6000. You may ask me how do they live for 6 months without a salary? Family members take care of them. Too many people work for fun because sitting at home is boring for them but they don't have enough money to have fun too.
In my city, at the enterprise, it was a little different. The game was called "Kotel". Simply put, you can call it a bankroll. What's the point? There is a team of several people. Every salary, the workers give part of the money. It is a small amount, but for the recipient it is quite noticeable, since the team is large. And so on in turn. Can this be called a game? I don't think so. Most likely, it is more like financial support, but at a certain time. It is like the 13th salary, which is given to all workers at the end of the year. If you want, you can call it a bonus.