Yes, you can use the Mi Box S to play games. The Mi Box S runs on the Android TV operating system, which supports a wide range of games that are available for download from the Google Play Store.

The Mi Box S has a quad-core processor and 2GB of RAM, which should be sufficient to run most Android games smoothly. Additionally, the Mi Box S supports Bluetooth 4.2, which allows you to connect a wide range of Bluetooth-enabled game controllers, including popular models such as the Xbox One controller and the DualShock 4 controller from the PlayStation 4.

See also: Sync a PS4 controller to Mi Box S

In addition to casual games and mobile ports, the Mi Box S also supports more advanced games that are optimized for the Android TV platform. Some popular examples of these types of games include Asphalt 8, Riptide GP: Renegade, and Sonic the Hedgehog 4 Episode II.

It's worth noting that the Mi Box S is primarily designed as a streaming device, so while it can run games, it may not provide the same level of performance as dedicated gaming consoles such as the Xbox One or PlayStation 4. However, it's a good option for casual gamers or those who want to play Android games on their TV without investing in a separate gaming console.