What Is h1 in Call of Duty: Modern Warfare Remastered and What Does the Aurora Client Add?

Updated

h1 is community shorthand for Call of Duty: Modern Warfare Remastered, the November 2016 remaster. Aurora is an unofficial client built for h1 (and separately for IW7, Infinite Warfare) that replaces the stock multiplayer front end with a dedicated server browser, mod and GSC scripting support, an unlock-all option, an in-game console, ranked progression, and an auto-updater. It is a separate download from the official game and is not affiliated with Activision Blizzard, Infinity Ward, or Raven Software.

Why "h1"?

The label comes from the game's internal codename and is used across modding communities to distinguish Modern Warfare Remastered from the original Call of Duty 4: Modern Warfare. If you see "h1-mod," "modded MWR," or "h1 client," it refers to the same 2016 remaster. Aurora's sibling project for Infinite Warfare uses the parallel shorthand "IW7."

What the Aurora client adds

Aurora's own feature list describes the following additions to h1:

Feature What it does
Server browser Lists dedicated servers so you can pick a specific community-run server, map, or gamemode instead of relying on matchmaking
Mod & scripting support Full mod support from weapons to maps, plus access to Call of Duty's official GSC scripting language
Unlock all Unlocks every item in the game for immediate use
In-game console Lets you enter commands to adjust your experience
Ranked multiplayer XP, leveling, challenges, medals, and Combat Record function
Controller support Full controller support with an optional aim-assist
Auto updater Updates the game from the main menu screen
Extra content Bouncing, elevators, restored cheat commands, and custom content/materials

The server browser is the headline change: it turns h1's matchmaking into a server list, which is what makes community-run servers with custom maps and gamemodes reachable in the first place.

What it is not

  • It is not an official Infinity Ward, Raven Software, or Activision Blizzard product, and the site states no affiliation with any of them.
  • It is not a patch applied to your existing install through official channels — it is its own client with its own download and documentation.
  • The site lists no pricing or payment information, so nothing here should be read as confirming it is free or paid.

How to get oriented

  1. Go to auroramod.dev and read the Documentation section before downloading, since setup steps live there rather than in this overview.
  2. Download the client for the game you actually own — h1 for Modern Warfare Remastered, IW7 for Infinite Warfare.
  3. Use the auto-updater from the main menu after install so you are on the current build.
  4. Open the server browser to find a community server, or use the console and unlock-all options if you want to configure your own session.

If your goal is simply to play Modern Warfare Remastered as shipped, you do not need Aurora. If your goal is custom maps, GSC scripts, dedicated servers, or unlocked loadouts, Aurora is the client that exposes those.