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A Sandbox-Like game (similar to Garry's Mod but no mod menu) (STILL IN EARLY ACCESS) Opposing Force is now here!
Half-Life: Sandbox is a Sandbox game that originally was meant to give players the ability to play it like Gmod, but is now unsupported
This is the original mod, but for Opposing Force! You do not need Half-Life: Sandbox to play this... yet
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your directory folder.
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder.
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder. This file also introduces Co-op for the first time...
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder. This file also introduces Co-op for the first time...
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder. This file also introduces Co-op for the first time...
This is the first full version of Half-Life: Sandbox!
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder.
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder.
This file is required to play Half-Life: Sandbox! Make sure you put sandbox files in your maps folder