Iconic Video Game Songs [Player's Choice Award]

[alexela64]

The Cybergrind by meganeko - this is THE ultrakill song and how i found out about the game. Goes incredibly hard
The Cyber Grind

And also, circles! i haven't played osu! since 7 or so years ago and it STILL gets stuck in my head to this day. (click!)

I don't know if opening sequences count, but if so, I'd have to say the one for Pokemon HeartGold. Genuinely gives me goosebumps every time...