Issues

• "NotInGame" filter in gamemenu.res is ignored in SDK mods

  ValveSoftware/source-sdk-2013#2107 · Filter by author KiwifruitDev opened on Sep 30, 2026

• C_HL2MP_Player client side ragdoll should inherit the owner's position and animation exactly when created client side.

  ValveSoftware/source-sdk-2013#2098 · Filter by author AdamTadeusz opened on Sep 22, 2026

• Just change the AppID in the sample gameinfos to HL2DM.

  ValveSoftware/source-sdk-2013#2092 · Filter by author hardlightbridge opened on Sep 19, 2026

• Bug Report: Valve Update Breaks Steam Game Server Visibility on Linux/ARM Emulation

  ValveSoftware/source-sdk-2013#2042 · Filter by author wagner1979 opened on Aug 30, 2026

• Pull fixes from Alien Swarm to the Color Correction Menu

  ValveSoftware/source-sdk-2013#2004 · Filter by author polydott opened on Aug 19, 2026

• Is source sdk updated to work with 20th anniversary?

  ValveSoftware/source-sdk-2013#1998 · Filter by author klaxons1 opened on Aug 16, 2026
  4

• npc_citizen dont recieve damage

  ValveSoftware/source-sdk-2013#1990 · Filter by author Malinenn opened on Jul 30, 2026

• [TF2 SDK] Linux Dedicated servers doesn't connect to item servers

  ValveSoftware/source-sdk-2013#1980 · Filter by author programmedsun opened on Jul 21, 2026
  1

• $detailblendfactor is not respected by UnlitGeneric material shader

  ValveSoftware/source-sdk-2013#1975 · Filter by author chaorace opened on Jul 19, 2026
  1

• Model scaling turns quadratic for one-bone models compiled without $staticprop

  ValveSoftware/source-sdk-2013#1974 · Filter by author chaorace opened on Jul 18, 2026
  1

• Proper Dedicated server build scripts and itemserver bug

  ValveSoftware/source-sdk-2013#1962 · Filter by author BringBackQuickPlay opened on Jun 25, 2026
  4

• [Any] VPhysics x64 crashes in 2 places when vehicles are not modelscale 1.0

  ValveSoftware/source-sdk-2013#1961 · Filter by author ArgonianGuard opened on Jun 21, 2026

• Brush face texture x y scale (and potentially other data) should be exposed to shaders

  ValveSoftware/source-sdk-2013#1937 · Filter by author AdamTadeusz opened on May 26, 2026

• TF2 SDK doesnt has the current vscript that's in the live tf2

  ValveSoftware/source-sdk-2013#1921 · Filter by author Snowywasbanned opened on May 16, 2026
  2

• Access violation when calling either of the Get/SetKeyValuesExpressionSymbol funcs multiple times

  ValveSoftware/source-sdk-2013#1918 · Filter by author dillydylann opened on May 11, 2026

• tangentSpaceTranspose matrix in lightmappedgeneric should be correct when TANGENTSPACE parameter is set to true and the material has no envMap or bumpMap

  ValveSoftware/source-sdk-2013#1916 · Filter by author AdamTadeusz opened on May 11, 2026
  1

• VBSP generates wrong collision for some brushes

  ValveSoftware/source-sdk-2013#1903 · Filter by author L0jk4 opened on Apr 27, 2026

• VBSP: Argument mismatch for -dumpstaticprops

  ValveSoftware/source-sdk-2013#1901 · Filter by author maxik34 opened on Apr 25, 2026
  1

• Day Night Cycle

  ValveSoftware/source-sdk-2013#1890 · Filter by author 4Rock4 opened on Apr 16, 2026
  4

• Push the changes made to the engine to the SDK

  ValveSoftware/source-sdk-2013#1848 · Filter by author polydott opened on Mar 21, 2026
  6

• Error Happens Although I Followed The Solution To Another Issue Here

  ValveSoftware/source-sdk-2013#1844 · Filter by author IDKWhatToName989 opened on Mar 16, 2026

• Missing Sixense header (isixense.h)

  ValveSoftware/source-sdk-2013#1810 · Filter by author violetic032 opened on Feb 17, 2026
  3

• [Question] How to compile for Windows on Linux.

  ValveSoftware/source-sdk-2013#1806 · Filter by author Bloody-Muffin opened on Feb 15, 2026
  1

• the game crashes after the valve intro plays , and this shows up

  ValveSoftware/source-sdk-2013#1801 · Filter by author chadouuuuu opened on Feb 13, 2026
  1

• Source code for Dedicated Server launcher

  ValveSoftware/source-sdk-2013#1796 · Filter by author ktwrd opened on Feb 10, 2026
  3