Q: how can i transfer my game data from an ipod touch 4 to a 6?

for the past year, i've been using my friend's ipod touch 4 (ios 6) because i broke my 5. i have two games on there that are very important to me- minecraft and neko atsume. recently i got an ipod touch 6 with ios 9, but no matter what i do, i can't seem to send the data for these games to the 6. i have tried everything the internet says i can do with itunes, but it only transfers the app without my data. is there any way i can send my full progress in these games to the 6 from the 4?