Pretty much everything but Mario Kart.   The genre's in serious decline, especially on consoles.

so can you help us find some more then ?

Because as of now only NFS is down. Everything else is up.

Sega Rally, Colin McRae, Race Driver, Ridge Racer, Gran Turismo, PGR, Forza, Sonic Riders, Burnout, Wipeout, F1, MotorStorm, GTR...pretty much everything has gone down with it's last installment afaik.  What's up exactly besides Mario Kart actually?

Forza 3 was available for U$40 bucks the week after it released, I have to say it's not as big a seller as some people hope. I like to compare it to Killzone. Yes, Forza is to Xbox 360 as Killzone is to Playstation 3. Neither of them sells well, both are great games and fanboys think they'll sell up there with the big boys - COD, GT.

almost...each are decent sellers that didnt meet the Sales hype projected on them.

I'd say more like Uncharted, personally.  Forza's more a critical darling with the media, but it's not a huge seller per se, like Uncharted.  

Sega Rally - true

Colin McRae - DiRT 2 sold 2 million so far (probably 2.5m LTD) That's more than DiRT and the games of last generation.

Race Driver - Not much data, but GRID is almost at 2 million, so I'm pretty sure it's about the same as the older ones.

Ridge Racer - For the whole series yeah. But Ridge Racer 7 still outsold Ridge Racer 6.

Gran Turismo - GT5 Prologue easily outsold GT4 Prologue, so I guess it's not down.

PGR - Everything between 1.5m and 2m. PGR4 could even outsell the first one.

Forza - Nope as mentioned above Forza 3 already outsold Forza 2.

Sonic Riders - Some missing data in the EMEA region, but in the end the Wii version will sell on paar with the first game.

Burnout - Nope. Paradise outsold Revenge (a shame) and is on its way to outsell Takedown.

Wipeout - no data, but that could be right.

F1 - no data, but I'm pretty sure the 2010 version will beat pretty much every prior installment

Motorstorm - First one was heavily bundled. Probably sold around 1.5m without them. Pacific Rift probaly won't reach that but will come pretty close to that.

GTR - I don't know didn't the 2nd one sell more than the first ?

So Colin McRae, GT Prologue, PGR, Mario Kart, Forza & Burnout are definitely up from the last installment

Just for reference, the first Colin McRae Rally sold 6 million copies, the DIRT games are nowhere near what the old PS1/PS2/PC games used to pull in.  

GT PSP bombed, and GT5P has huge inherent advantages over GT4P (worldwide release, heavy bundling, series debut on the platform, etc)... it's exceedingly clear that GT5 won't come within sniffing distance of the series highpoint GT3 was.

PGR4 and Forza 3 both are well behind their previous installments, and PGR3 was down already from PGR1 last gen.  Paradise outsold Revenge, but it's over 500k behind Takedown and that's with a huge amount of post release support and no quick sequel (something no previous Burnout had the luxury of).  

So... that leaves us with... Mario Kart. :/

Where do you get those numbers from ?

PGR4 already outsold PGR3 and PGR2 and will overtake PGR1 soon.

Forza 3 outsold Forza 1 and Forza 2 (over 2 million copies from Forza 2 came from bundles with every Pro and Elite SKU) and even if you count them as legit sales, Forza 3 is almost at 3 million and will break 4 millions eventually.

Burnout Paradise will outsell Takedown. No question about that. Both Paradise versions were under 1 million not even a year ago.

GT5 Prologue was only mandatory bundled in Japan. 300k units. Even without US numbers it sold more than GT4P and that's all what counts.

It could be right that the first Colin McRae sold very very well (again where are your numbers ?), but I'm very sure that DiRT2 sold more than the previous 4 games in the series. You can't say it's on a decline when it's infact recovering itself.

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