View source for Category:Games on non-Valve engines using Valve IP

{{toc-right}}
This page lists games based on Valve's intellectual property which don't run on Valve-developed engines ({{goldsrc|4}}, {{src|4}}, and {{src2|4}}). Mods are also listed if they are substantial enough to be considered their own game.

{{modernImportant|This list category does ''not'' include games that run on third-party forks of Valve-developed engines (ex: {{portalrev|2}} runs on {{strata|2}}, a fork of the {{csgobranch|2}} of {{src|2}}, and therefore is not included).}}
== Games based on Valve IP ==
These games are directly based on Valve properties, and have the properties as their main focus.
{{note|Such games should only be given their own VDC wiki page if:
* They were developed by Valve (ex: {{thelab|2}}).
* They were developed by a studio which was later acquired by Valve (ex: {{qtf|2}} or [[Defense of the Ancients]]).
* They were developed by a second- or third-party who licensed Valve's properties (ex: {{cg|2}} or [[Counter-Strike Neo: White Memories]]).
* They have technical details relevant to Valve's engines (ex: {{cloop|2}} or {{freecs|2}}). 
** This includes such games which run on {{Idtech2|2}}, {{idtech3|2}}, {{idtech4|2}}, or a source port thereof (ex: {{fortressone|2}}), as those engines are closely related to Valve's engines.
}}
* {{qtf|4}} ({{quakeengine}}, later acquired by Valve and remastered on {{goldsrc|3.1}} as {{tfc|3.1}})
* {{fortressone|4}} ({{fte}}, fork of {{qtf|3.1}})
* [[Defense of the Ancients (Warcraft III: The Frozen Throne mod)|'''Defense of the Ancients''']] ({{pcgw|Warcraft III: Reign of Chaos|Warcraft III: The Frozen Throne}} mod)
* '''{{cs2d|4}}''' ({{wikipedia|Blitz_BASIC|BlitzMax}})
* '''[[Counter-Strike Neo: White Memories]]''' ({{flash}})
* {{cg|4}} ({{flash}})
* {{thelab|4}} ({{unity}}, except Robot Repair, which uses {{src2|3.1}})
* {{cloop|4}} ({{Unity}}, supports {{goldsrc|3.1}} file formats)
* '''{{portalwiki|Portal: The Flash Version}}''' ({{flash}}, some levels were later recreated in [[Portal: Still Alive]])
* {{freecs|4}} ({{fte}}, clean-room reverse-engineered port of {{cs|3.1|addtext=&nbsp;1.5}})
* '''[[FreeHL]]''' ({{fte}}, clean-room reverse-engineered port of {{hl|3.1}})

== Other games containing Valve IP ==
These games contain Valve properties, but do not have the properties as their primarily focus.
{{note|Such games should only be given their own VDC wiki page if they have technical details relevant to Valve's engines.}}
* {{W|Audiosurf}} ({{pcgw|Engine:Quest3D|Quest3D}})
* '''{{portalwiki|Lego Dimensions}}''' ({{Pcgw|Engine:Nu2|Nu2}}, includes two levels and a hub based on [[Aperture Science]], as well as [[Chell]] as a playable character. Also has a brief cameo appearance of the [[Black Mesa Research Facility|Black Mesa]] insignia in a cutscene.)
* '''{{l4dwiki|Resident_Evil_6_✕_Left_4_Dead_2|Resident Evil 6}}''' ({{pcgw|Engine:MT Framework|MT Framework}}, had crossover with {{l4d2|2}})
* '''{{wiki|Poker Night at the Inventory}}''' and '''{{wiki|Poker Night 2}}''' ({{wiki|Telltale Tool}}, contain characters from {{tf2|2}} and {{portal|2}})

[[Category:Lists]]
[[Category:Non-Valve engines]] <!-- {{non-valve engine}} doesn't have a good description for the notability of this page -->