The Best Game Music in 2015 is:

1st place:
BGM15
Jonne Valtonen and Jani Laaksonen
Mobile Suit Gundam : Sidestories
Bandai Namco

2nd place:
Retry Soundtrack
Ilmari Hakkola (Ted Striker)
Retry / Rovio Entertainment Ltd.

3rd place:
Phasmatis
Ari Pulkkinen
Resogun / Housemarque (Sony)