As the topic title said. The cheats are supposed to be just entered in with the keyboard on the main menu, but for some reason, they won't work for me. Could this be a problem with the installation file? Should I have used the md5 checker? I didn't really think that a cheat issue would have anything to do with that but I don't know a whole lot about installation files. So is anyone else having this problem?

Have you tried the cheats for both the European and US versions? There are actually two sets of codes for the two versions.

Ahh, I did not know this. Thanks a lot man.

I haven't been able to find the EU cheats. Any pointers? I like driving around in sandbox mode, can't be bothered to unlock everything manually ;)

Here's a bunch of them.

Thanks so much, pkt-zer0!

Apologize for the thread necromancy and all, but I am having this issue with both sets of cheats. Anyone confirm that you just can't use codes in the GOG version?

My turn to apologize for the necromancy, but I have the same problem, I tried entering the cheats at various menus (just like the "main menu" in Screamer 2 is after you choose your team and name), but I can't get the cheats to work, I tried both sets of cheats (US and EU) to unlock all cars and terrains and nothing happens.
Have they been patched out of the game?

If anyone cares, I found a way to make the tracks and cars cheats work.

I tried quick race and typed them at the map select and vehicle select screens.
I live in France so I used the euro codes:

-> ineedmoremaps
and
-> ineedmorecars

And it worked!
I suppose the other cheats can be typed in different manus as well, the explanations on cheat sites seem incomplete (I(ve had the same problem with cheats for Eradicator or Screamer 2, for instance).

Now if only the cheats for Ignition worked on the DOS version...