CSWikiAdmin: Bot: Phase 3: History & Deep Content — create Source 2 Engine

2026-02-23T20:54:14Z

Bot: Phase 3: History & Deep Content — create Source 2 Engine

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The '''Source 2 Engine''' is Valve Corporation's proprietary game engine that powers [[Counter-Strike 2]]. It is the successor to the original Source engine that powered [[CS:GO]], ''Half-Life 2'', and many other Valve titles.

== Overview ==
Source 2 was first publicly shown with ''Dota 2 Reborn'' in 2015 and was later used for ''Half-Life: Alyx'' (2020). Counter-Strike 2 (2023) brought Source 2 to the Counter-Strike franchise, enabling significant technical improvements over the Source 1-based CS:GO.

== Key Improvements for CS2 ==

=== Rendering ===
* '''Physically Based Rendering (PBR)''' — More realistic lighting and material responses
* '''Dynamic lighting''' — Real-time light sources that interact with the environment
* '''Improved particle effects''' — More detailed smoke, fire, and explosion effects
* '''Higher texture resolution''' — Sharper, more detailed surfaces
* '''Better reflections''' — More accurate environmental reflections

=== Networking ===
* '''[[Sub-Tick System]]''' — Actions processed at the precise moment they occur, not at tick boundaries
* '''Improved hit registration''' — More accurate server-side detection
* '''Better interpolation''' — Smoother movement rendering between updates

=== Physics ===
* '''Enhanced ragdolls''' — More realistic player and object physics
* '''Volumetric smoke''' — 3D smoke that reacts to lighting, bullets, and explosions
* '''Responsive smokes''' — HE grenades and gunfire can temporarily disperse smokes
* '''Improved grenade physics''' — More predictable bounce and trajectory behavior

=== Map Tooling ===
* '''Hammer 2.0''' — Updated map editor with modernized workflow
* '''Faster compile times''' — Maps build more quickly
* '''Sub-object editing''' — More granular control over map elements
* '''Improved lighting baking''' — Better quality lightmaps with faster generation

=== Audio ===
* '''Reworked 3D audio''' — More accurate spatial sound positioning
* '''Improved HRTF''' — Better headphone-based directional audio
* '''Dynamic sound propagation''' — Sound travels realistically through map geometry

== System Requirements Impact ==
Source 2 generally requires more powerful hardware than Source 1:
* Higher GPU requirements for PBR rendering
* More VRAM usage for higher-resolution textures
* Increased CPU load for improved physics and networking
* CS2 minimum requirements are notably higher than CS:GO's

== Comparison with Source 1 ==
{| class="wikitable"
! Feature !! Source 1 (CS:GO) !! Source 2 (CS2)
|-
| Rendering || Pre-baked lighting || Dynamic PBR lighting
|-
| Smoke grenades || 2D sprite-based || 3D volumetric, reactive
|-
| Tick system || Fixed tick rate (64/128 Hz) || [[Sub-Tick System|Sub-tick]] precision
|-
| Map editor || Hammer 1.0 || Hammer 2.0
|-
| Physics || Havok (limited) || Enhanced physics system
|-
| Audio || Basic 3D audio || Full HRTF spatial audio
|}

== Other Source 2 Games ==
* '''Dota 2''' — Ported to Source 2 in 2015 (Reborn update)
* '''Half-Life: Alyx''' — VR title built on Source 2 (2020)
* '''Counter-Strike 2''' — Latest Source 2 game (2023)

== See Also ==
* [[Counter-Strike 2]] — The game powered by Source 2
* [[Sub-Tick System]] — Source 2's networking innovation
* [[Counter-Strike History]] — Franchise engine evolution
* [[CS:GO]] — The Source 1-based predecessor

[[Category:Technical]]
[[Category:Counter-Strike]]

Source 2 Engine - Revision history

CSWikiAdmin: Bot: Phase 3: History & Deep Content — create Source 2 Engine