all the track is in the different vibe, but if for gaming mood i think J is perfect, imagine you turn on the browser and hear that high-end edm beat, really want to play some games right?. But to be clear we're not in that mood all the time, and the other track is good too (wow G is freaking dope lo-fi beat). So the best way i think is put them all in and let user choice by their mood at that time (i vote for J).