Are you running Ubuntu 14.04 LTS or Mint 17 LTS? Then it's the correct thread. If you're not, then I don't know. The gamecard has a list of the required Ubuntu packages:

Requires the following packages to be installed: libc6:i386, libasound2:i386, libasound2-data:i386, libasound2-plugins:i386 and dependencies, Notice: game comes with a 32-bit binary only, this is a Wine game

Yup, I'm running Ubuntu 14.04 (64-bit, requirements are ok) and I have absolutely no clues on how to install those 32-bit dependencies. I've been using linux on a daily basis for the past year for entertainment purposes only, so I didn't have the proper time to learn this kinda stuff :P
Thanks!

I will do it asap!
Thanks!

Why there is no deb for Flatout 2?

Ok, but why this is a problem for creating a deb installer?

whoa that was quick! thanks guys!
the new installer made the game run like a charm

but I can't go into fullscreen now (never did with wine ports, dunno why) and I really can't tell where is the initial setup option, I mean, the game starts with the same settings every time
any tips?

The troubleshooting page linked to in the OP calls wine an emulator. Once again, Wine is not an emulator.

It would be nice to have deb packages for all GOG Linux games for easy (un)installing. Deb package could also have dependencies for required libraries to avoid hassle with installing them manually. Maybe somebody from the team which works on Linux builds could provide us with some explanation why it couldn't be done or better take additional effort to make these debs :=).

I believe it's because there's a lot of variable data in the wine prefix which does not belong under /opt (though I guess it can go in /var/opt), and if installed through the package manager you will end up with a bunch of leftover junk files in /opt/GOG Games after uninstalling.

IMO it is easier to just unpack a tar.gz somewhere in your home folder and then delete that single folder after you're done playing.

Well, technically that's true. Wine is an API translator. It translates Windows API into its Linux counterparts. But Wine pretends to be Windows, so you might say it "emulates" it. Although WINE doesn't really do any real emulation, so saying it's not an emulator is more correct in a technical sense.

But for the most users that's not that important if their favorite game runs. :)

Files installed via a .deb package are not user-writable, but the game probably needs to write in some folders (saves, settings, etc.).
I’ve done .deb packages of games running through WINE, depending on the system-wide WINE (i.e. not embedding it in the .deb), but I had to do some work with symbolic links to have user-writable files in some places. It does work well, but it needs (a lot) more work than a .tar.gz archive which can be unarchived in the user $HOME therefore being fully user-writable.

Both methods (.deb and .tar.gz) have pros and cons, and I understand fully why GOG Penguin Squadron chose the easiest to implement.
(hey, I bet they’re the ones doing the Linux tech support too)

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I hope that I wrote something understandable by non-techy people ;)
Elsewise, just tell me and I’ll try to explain better…