在介绍之前，要先声明表示这一内容并不一定指《半条命3》就一定正在开发中，而阀门厂也并没有公开和泄露有关于《半条命3》的消息，下面进入正题。

　　昨日SteamVR性能工具文件正式公布，随后大批玩家便详细查看了这一文件来找寻有关于《半条命3》的蛛丝马迹。幸运的是在性能工具文件中真的发现了《半条命2》和《半条命3》的字样，二者是否意味着阀门厂开发《半条命3》或是在VR平台上重新制作《半条命2》还不得而知。

以下为部分性能工具文件内容：
There is 1671 matches of hl, 14 of hl3, 97 of hl2, 11 of HalfLife2, 0 of HalfLife3
c:\buildslave\vrgdc2015_staging_win64\build\src\game\client\hl3\c_point_quest_goal
BaseHLBludgeonWeapon
HLSelectFireMachineGun
C_BaseHLPlayer::Schema_VerifyBindingIsRegistered
client\hl2\c_strider.cpp
\client\hl2\c_npc_manhack.cpp
And this is just a few, I found alot of weopons and npcs mostly HL2 what I could find. Now I am not a programer or anything, so I dont know what any of this means. I just found it in the code
EDIT Under the server.dll I found some more text
GameSystemReallocatingFactory@VCHL3VScriptGameSystem
HL3_SpyGrenadeHint¨
game\server\hl3\gravity_vortex_controller
\game\server\hl3\info_quest_dialog
game\server\hl3\procedural_spawn_target
game\server\hl3\npc_turret_ceiling_pulse
CLASS_PLAYER CLASS_ANTLION CLASS_APCDRIVER CLASS_BARNACLE CLASS_BLOB CLASS_BULLSEYE CLASS_CITIZEN_PASSIVE CLASS_CITIZEN_REBEL CLASS_COMBINE CLASS_COMBINE_GUNSHIP CLASS_COMBINE_HUNTER CLASS_CONSCRIPT CLASS_HEADCRAB CLASS_MANHACK
But more then anything I found HL2 refrences all over the code.
EDIT2:
In the file “readyonly_tools_asset_info.bin” under /steamVRPerformanceTest/vr.
core vr portal2_imported left4dead3 hl3
Al in one string.