# Playing/cracking the original 2004 HL2 5 disc CD release **URL:** \ **Category:** ⚙ Technical Support\ **Tags:** souce, unpack\ **Created:** [February 26, 2021, 7:44am UTC](https://forums.sourceruns.org/t/playing-cracking-the-original-2004-hl2-5-disc-cd-release/3807 "2021-02-26T07:44:36Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![yoshi](https://b-cdn.sourceruns.org/user_avatar/forums.sourceruns.org/yoshi/32/571_2.png) [@yoshi](https://forums.sourceruns.org/u/yoshi)\ **Post date:** [February 27, 2021, 5:34pm UTC](https://forums.sourceruns.org/t/playing-cracking-the-original-2004-hl2-5-disc-cd-release/3807/4 "2021-02-27T17:34:03Z")
> [@Half-Life 2 old engine without "pirating"](https://forums.sourceruns.org/t/half-life-2-old-engine-without-pirating/3210/10): > > My apologies for responding to a very old thread, but i felt like sharing this information here, since it’s hard to find to my knowledge. The hlunp.exe program is a bit hard to find, but i was able to find it with a google search on some obscure chinese forum, and later found it on a 2004 crack. I’m not sure if i’m permitted to post executables here, so PM me and i’ll send it to ya. The program does not automatically decrypt the GCFs, the proper keys are required. Turns out they have been publ… --- _[View the full topic](https://forums.sourceruns.org/t/playing-cracking-the-original-2004-hl2-5-disc-cd-release/3807)._