How do you download games onto your spy net spy watch

you don't. the games on the watch are the only games you can play.
If you mean missions you download spynet field office and click missions. you then choose a mission ,click on it and click yes. when you disconnect your watch it will (at a random time) alert you that you have a mission.actually u can because my friend did it he said he just played the games and next thing u know the games are there