GTA IV Free Key Codes (Steam Keygen) 0 comments. Posted in Serial/Key Generator 2015-07-30. GTA IV Keygen For Generation Serial Keys GTA IV Product Key GTA IV. My Friend find this post useful and he activate gta iv without any license key, you can also activate GTA 4 easily by following simple steps. Here it is. A working GTA IV Crack + 184.108.40.206 Patch Install note 1. Install the game. 2. Install the 220.127.116.11 patch. 3. Copy all the files into the Gta IV.