>>133016501) Make him play FRLG and then HGSS
(FRLG optional. If he complains about the music in HGSS, there are AR codes that give you the GB sounds as soon as you reach Cherrygrove)
2) Show him pictures of 4th gen evos like Electivire and Magmortar, and make sure he catches a Murkrow, a Misdreavus, a Tangela and a Swinub in HGSS (to evolve them)
3) Try to get him to play Platinum
4) Here is the hard part. If he did like platinum, Let him play BW.
If not, let him play BW2 because there are old pokes available.
5)If he still doesn't like the new games,
BEAT HIM WITHIN AN INCH OF HIS LIFE 
