A mini-PC is a good alternative to a classical desktop computer if users only need it for office work and occasional game playing. The mini-PCs take up much less space and power. The German magazine PCgo reports that only older games with less complex graphics can be played with the graphic card integrated in a mini-PC processor.
Users who play a lot should choose special minis with more powerful graphic chips. But these cannot really compare with full-size computers especially built for gaming.