Okay, so here is my 10 most addicting games list, according to the ones I've played. (Let's keep in mind my memory too :D)

10. Tron - The Classic Light Cycle racing no doubt.
9. Snake - Who can forget eating up dots and becoming larger.
8. Resident Evil Series - I know i know "thomas thats not a game, its a series". My list, my rules.
7. Stick Arena - Definetly should try this out, really fun stuff for a cheap flash game.
6. Gunz the Duel - I love its' simplicity, really.
5. Worms Armageddon - I've probably clocked well over 300 hours on Worms Armageddon alone, not to mention the other ones.
4. Grand Theft Auto: Vice City - If the awesomeness of its wisecracks dont get you, the soundtrack definetely will.
3. Painkiller - Who doesn't like to shoot hell spawns and other riff-raff in the teeth?
2. Mario Paint - It's almost like Adobe Photoshop Beta. Love Mario paint, won't ever get sick of it. (unless they make Mario Paint for Wii :O )
And the moment you've waited for in whatever time it took you to read the other of my 10 most addicting games.
The Number one most addicting game on my list is


Marvel Vs Streetfighter
I've easily spent over 200 dollars in quarters in the machines for this games back in the 90's and X dollars on emulation for pc. You can't deny it's amazing unless you suck. this pretty much goes for all Arcade fighters. Tekken (for you Krassin), Marvel Super Heroes, Street Fighter Alpha, Mortal Kombat.

This concludes my list.