Today's smartphones are powerful enough that you can really think of them as fully functional computers that fit into a pocket. And just like computers, you phone can also serve as a gaming system.

Nintendo has shaken up how it treats your digital game purchases. It's now calling those virtual game cards, and it hopes to make it easier for you to share your games across multiple Switch systems.

Your iPhone can do a lot, including serve as a respectable mobile gaming console. And while many mobile games play just fine with touch controls, many games available for iPhone are better played with ...