I first came across the concept of "mini games" when listening to an Art of Manliness podcast episode with Alastair Humphrey. He talked about how individuals could live more fulfilling lives by seeking mini adventures in their spare time. The idea of maximizing my spare time or moments of unproductivity has led me to conduct further research on the matter. So far, I came across other helpful resources that kind of expands on the idea, such as Mikaly Csikszentmihalyi's book Flow: The Psychology of Optimal Experience, and I believe there are a couple of posts on this forum that addressed the idea. Essentially, I look at mini games as an opportunity to refine existing skills or to occupy my spare time with interesting games. Your spare time can include any moment of unscheduled time, such as when you're waiting in line at the cash register or even when you're driving. The hope is that by filling your spare time with a mini game or two, you can repurpose that time instead of just diddling on your smartphone (though there are some cool apps to play as well). Comment below if you have your own ideas. Make sure you put the name of the mini game in bold and explain the rules. To start this thread, I like to share a personal favorite I play while I'm at work as a cashier. The name of the Operator Challenge comes from the tactical world. As a cashier, I notice certain numerical trends as I ring up people throughout the day. If I notice a "tactically oriented" number as I ring up someone, at the next opportunity or slow moment I must drop and do ten push-ups. These numbers can include anything from the gun world or tactical world (ex. $3.08=308; $5.56=5.56; $3.80=380 ACP; $5.11=5.11 Tactical Gear; $19.11=the 1911 pistol; and so on). In the average day, I might do 40 or 50 push-ups, which helps with my personal fitness.