Forza is one of my DS (12) favourite games - he has an Xbox but I'm pretty sure it's available for PS4 too. Or there's another one he likes about skiing - "speed" maybe it's called? No I don't think that's right - I'll need to look it up.
DS this year is getting a chin up bar for his bedroom doorframe and some hand strengtheners - his sport is rock climbing so upper body/arm/finger strength are really important, but I think this is the age a lot of boys start getting into strength building as well as sport so something along those lines might work?
He'd also appreciate vouchers for some clothes stores so he could choose some of his own stuff - for him it would be Hollister/Zara/A&F but if those styles aren't your DS's what about a sports store or Superdry then he can start to choose some of his own things