Sandpit is a sandbox mod for Half-Life.

Features include:

  • Spawn menus for Half-Life and Opposing Force monsters, models and sprites
  • Pose menu for changing skins, bodies, world and mouth position position of monsters, models and sprites
  • Automatic mounting of Opposing Force, Counter-Strike and Day of Defeat content


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10 years ago the first version of Sandpit was released - it wasn't much - just the spawn menu and a few monsters from Half-Life, all based off some VGUI tutorials by Richard Zad at The Wavelength. For the next few years Sandpit got lots of updates with lots of features but by 2010 other projects (like Sandbot) had started to take up more time.

Sandpit's improved posing capabilities

In 2013 full-time work rolled around and not a lot of programming got done for fun anymore, but the updates to Half-Life and the release of the updated SDK re-ignited some interest and Sandpit started getting some more attention again. In the background, work on Basis got moved to new Half-Life SDK.

Sandpit's spawn menu

In 2015 a new job meant more desire to finally get Sandpit v4 to happen. Until then nothing had really been done beyond patching a code-base that was very obviously messy and in need of some love. Basis was tidied up and released publicly in 2015 and in 2016 and a new Sandpit was forked off Basis to take advantage of the fixes and structure that it brought. Work continued slowly for the next little while, but by the second half of 2018 it was still far from completion. The looming 10 year anniversary of Sandpit meant a lot of work got done in September, October and November of 2018 to get the most important features done in time.

Sandpit's spawn menu

In spite of best efforts, there was still an annoying bug in v4.0 that couldn't be reliably reproduced during testing and so a day later v4.0.1 was released to fix it.

There's still lots more planned for Sandpit (follow Sandpit to stay informed) - here's to another 10 years!

P.S. there are still two days left to vote for Mod DB's Mod of the Year - vote for Sandpit at Moddb.com

Transmission 15929

Transmission 15929

Feature 7 comments

A new episode of Podcast 17 featuring Stargate: Legacy, Half-Life 2: Dawn, Valve's recent interview on GTTV, brief discussions about SHIFT and Perfect...

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Sandpit v4.1.1

Sandpit v4.1.1

Full Version 6 comments

Sandpit v4.1.1 fixes Sandpit not loading in the latest version of Half-Life.

Sandpit v4.1

Sandpit v4.1

Full Version 82 comments

Sandpit v4.1 adds a new Sprite Menu, some Opposing Force entities, entity scaling and more.

SandPit 4.0.1 (EXE)

SandPit 4.0.1 (EXE)

Full Version 18 comments

SandPit 4.0.1 installer version. Automatically detecting Steam HL1's path.

Sandpit v4.0.1 (ZIP)

Sandpit v4.0.1 (ZIP)

Full Version 48 comments

Sandpit v4.0.1 fixes stability issue in the previous release.

Sandpit v4.0 (ZIP)

Sandpit v4.0 (ZIP)

Full Version 20 comments

Sandpit v4.0 is a complete re-write of Sandpit on the latest version on the Half-Life SDK.

SandPit 3.7.1 (EXE)

SandPit 3.7.1 (EXE)

Full Version 40 comments

SandPit 3.7.1 installer version. Automatically detecting Steam HL1's path.

Comments  (0 - 10 of 1,144)
RedLazer5000
RedLazer5000

Hopefully you fix this mod soon. I had to fix "Half-Life: Sandbox" to get it working! One of my mods got so broken cuz of the update. I had to reupload it

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tschumann Creator
tschumann

RedLazer5000 I've tracked down the issue and am working on a fix.

Reply Good karma+2 votes
RedLazer5000
RedLazer5000

Excellent ! Well hav the engine up and running soon
- Hl Scientist

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tschumann Creator
tschumann Reply Good karma+2 votes
tschumann Creator
tschumann

RedLazer5000 yep working on it.

Reply Good karma+1 vote
__LucaS__
__LucaS__

The 25th anniversary update of Half-Life seems to have broken this mod.

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tschumann Creator
tschumann

@__LucaS__ yes I noticed yesterday - as Guest has said, switch the branch back for now - I'm waiting to see if Valve updates the SDK.

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Guest
Guest

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minihootdaowl
minihootdaowl

Can I use it on Half-Life Non-Steam?

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tschumann Creator
tschumann

minihootdaowl you can try but I only test with the Steam version.

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minihootdaowl
minihootdaowl

I tried, when I try to bring up the spawn menu, nothing happens, and when I look in the console, it says the command used to bring up the spawn menu was not found. Same with prop menu.

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tschumann Creator
tschumann

minihootdaowl not sure then - try with the Steam version as it works for me.

Reply Good karma+1 vote
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