Source 2

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Screenshot of Half-Life: Alyx Half-Life: Alyx, using the Source 2 Engine.
Screenshot of de_canals de_canals in Counter-Strike 2 Counter-Strike 2.

Source 2 Source 2 is a 3D video game engine currently in development by Valve as a successor to Source Source. It is used in Dota 2 Dota 2, SteamVR Home SteamVR Home, Half-Life: Alyx Half-Life: Alyx, S&box S&box, Counter-Strike 2 Counter-Strike 2, and more.

Source 2 was first made public with the Dota 2 Workshop Tools Alpha in August 6th 2014 and formally announced by Valve in March of 2015 at the Game Developers Conference. It was then implemented into Dota 2 on June 17th 2015. Valve has announced that Source 2 will be released to the public for free, and it will only take money should it be used for commercial products.

The engine is capable of rendering highly complex and well detailed scenes with minimal framerate drops, thanks to its new 64-bit support alongside Vulkan, allowing for better multi-core rendering and more efficient 3D rendering.

Features

  • Integrated asset management via the Asset System.
  • New engine-integrated authoring tools, rebuilt from the ground up.
  • Completely rebuilt Hammer level editor, featuring modern polygon mesh editing tools.
  • Support for both forward and deferred rendering pipelines.
  • Lower latency and more responsive input.
  • Improved audio and voice processing.
  • New in-house physics engine, Rubikon. Includes support for Cloth Simulation.
  • Physically based rendering support.
  • Support for the Steam Audio sound system.
  • WebM video, replacing the previous Bink Video format.
  • Enhanced Panorama GUI, designed to be more user friendly.
  • Native DirectX 11® and Vulkan® support, with support for Shader Model 5.0 and later.
  • 64-bit supported
    • Previously, Source 2 also support 32-bit, which has been dropped since Dota 2 Dota 2 (except SteamVR Home SteamVR Home).

Limitations

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Products using Source 2

Valve

Products made by Valve.

Released

Release date Title Co-developed with Platforms Notes
9 Jul 2013 Dota 2 Dota 2 PC: Windows, Mac, Linux A MOBA game. Sequel to 2003's Warcraft III mod, Defense of the Ancients (retroactively called as Dota 1, DotA for short). Originally using Source when launched in 2013, ported to Source 2 in Sep 9, 2015.
22 Feb 2016 SteamVR Performance Test PC: Windows (VR) Non-interactive version of the Robot Repair demo. No longer available for download.
5 Apr 2016 The Lab Robot Repair - a minigame from The Lab PC: Windows (VR) This is the only The Lab The Lab minigame that runs on Source 2, the rest runs on Unity.
9 Jun 2016
Destinations Destinations PC: Windows, Linux (VR) Photogrammetry and environment viewer. Deprecated and replaced by SteamVR Home.
19 May 2017 SteamVR Home SteamVR Home PC: Windows, Linux (VR) Virtual Reality portal and social hub included as part of SteamVR.
28 Nov 2018 Artifact Artifact PC: Windows, Mac, Linux The Dota Card Game. The game was widely criticized by players who are disappointed with Valve abandoning the Half-Life series at the time, aswell as calling the game "pay-to-win", even prior to Artifact being released.
20 Jun 2019 Dota Underlords Dota Underlords PC: Windows, Mac, Linux
Mobile: Android, iOS
Auto Battler game. This is currently the only Source 2 games to be released on mobile devices (both Android, iOS).
23 Mar 2020 Half-Life: Alyx Half-Life: Alyx PC: Windows, Linux (VR) First Half-Life game to be released since the release of Half-Life 2: Episode Two, which was released 12 years prior. Half-Life: Alyx was highly anticipated when it was announced.
2 Mar 2022 Aperture Desk Job Aperture Desk Job PC: Windows, Linux A short playable demo set in Portal universe, used to demonstrate the Steam Deck. The game requires controller to play the demo.
27 Sep 2023 Counter-Strike 2 Counter-Strike 2 PC: Windows, Linux Originally planned to be released in Summer 2023, it was delayed and later released in September 27, 2023. This is a port of Counter-Strike: Global Offensive to the Source 2 engine, under it's new name "Counter-Strike 2 Counter-Strike 2", which eventually replaced the original game. Most CS:GO maps were removed, while others have been remade from scratch.

Unreleased

This section are for unreleased games by Valve that are in development, not publicly released or is in Beta/Early Access.

Release date Title Developer(s) Publisher(s) Platforms Notes
TBA Deadlock Deadlock Valve Valve PC: Windows Deadlock is a third-person shooter MOBA game currently in semi-private beta testing (invite only). The game features 21 characters you can play as. It is known internally as "Project 8" and formerly "Citadel".
Players who already have access to Deadlock can invite another player(s) to have beta access.

Third-Party

Products made by third-party companies and mod teams.

Released

  • None yet.

In development/Unreleased

This section are for unreleased 3rd party games that are in development, not publicly released or is in Beta/Early Access.

Release date Title Developer(s) Publisher(s) Platforms Notes
TBA S&box S&box Facepunch Studios Facepunch Studios PC: Windows (VR optional) As stated by Garry Newman himself, this is not intended to be a remaster of Garry's Mod, but rather, a spiritual successor. This is also the first time, and only time Source 2 was licensed to third-party developer. S&Box runs on heavily modified version of Source 2.


Documentation

See Also