Grand Theft Auto IV and Grand Theft Auto: Episodes from Liberty City updates to remove Games for Windows Live Receive help with your Rockstar Games technical issues - Use our Knowledge Base Articles and receive assistance via Callback, Chat, Email, and our Player Supported Community Go to your Library and click GTA IV then on the right side, there will be a clickable text named "CD Key". Click that. A box containing your CD Key will be shown. #1 WACK 6. dub. 2015 v 8.12 so wheres the unlockable code #2 ViggyTheBear 6. dub. 2015 v 9.07 Click on GTA IV on your Steam library. On the far right side will be an option called CD Key. hi i am being asked to enter a serial: below is an unlock request code . what do i put in as the serial i put the unlock request code in but it fails . any ideas help please Grand Theft Auto IV (PC) I haved bought this game for 3 month ago but can't figure out how to play this game o_O When i try to play online, it asks me for serial number and i don't know where can i find it then I decide to create offline account but it still asks me for the serial key, any idea? The GTAIV PC Product Key (Serial Number, CD Key, etc.) from your Steam account, email receipt, or manual; The Unlock Request Code provided as part of the installation and activation process; Any error messages you have encountered during the installation GTA 4 SERIAL NUMBER. Where can I find my seril number for GTA 4. it was a glitch you bought it online too i also too had the prob. there is none serial numb only comes on game disk box it was a glitch we get to play with cdkeys wich we all no by now its ♥♥♥♥♥♥♥ up so it was a glitch wait 3-4-8 days for a cd key :) c6PP.