Isn't the attach rate the number of NEW (not used) games sold per single console on average?  If I were to trade in everything that I buy I've still bought them and the attach rate for me is still the same if they are used.

The better question here is what games have you bought for your console that were new?

I bought all but 1 of my games new. I wouldn't buy a used game to save $5 bucks (looking at you gamespot) though gamefly offers great deals for previously rented games.

i own 6: nfs: most wanted, oblivion, dead rising, forza 2 and sega rally

Oh, no. Almost forgot Rockstar-Tabletennis. 

@kn:

True. Second-hand game sales do no good to the attach rate. I think that would still classify your attach rate as having fallen if you traded in your games, though.

I have about 8 games for my RRoD box.

Xbox 360 since 06, october. 1 Year :P

PAL

Blue Dragon
Crackdown
Enchanted Arms
Fifa 07
Forza Motorsport 2
Gears of War
GRAW 2 (Ntsc)
Halo 3
Nba Live 07
NHL 07
Perfect Dark Zero
PGR 3

14 games total.
PES 6
Virtua Tennis 3

Ive had 4 360s since spring of 06 all used and these games all bought used.

Rainbow six vegas,

frycry predator,

callof duty 3,

callof duty 2,

burnout revenge, l

egostarwars II,

tetris,

GRAW,

ddr,

halo 2,

halo3,

the simpsons road rage,

conker live and reloaded

I'm pretty sure Microsoft only counts 360 software for 360 attach rate, though I imagine people who didn't/don't own the giant black beast probably do pick up the odd BC game.

14 games right now, 3 new ones in the next week with the toysr us deal.

right now

halo 3

gears of war

viva pinata

rainbow six vegas

dead rising

forza2

all pro football 2k8

splintercell DA

crackdown

DOA 4

the outfit (mulitplayer in this game is fantastic)

blazing angles

burnout revenge

buying next week

bioshock

orange box

ace combat 6

Well i got my 360 during the summer and was pretty pissed that their weren't many games I liked.

I own

PerfectDark:Zero

FullAuto

Halo3

Bomberman ( I got it for 10$ don't laugh)

So four games within a short period of time is pretty good. Though I have about 10 for my Wii, Microsoft fails to really give me much I want. Of course with upcoming third party titles like BlackSite:Area51, CallOfDuty4 and Turok I am bound to be playing my 360 almost as much as my Wii!