To my surprise the Mod SDK (which includes the Sandbox Editor) isn't included in the Crysis Wars installer. Fortunately one can still download it here: https://www.cryengine.com/community_archive/viewtopic.php?t=48387 (direct download link)

@GOG & EA: would be cool if this could be added to the installer files.

edit: The official links are down. But one can still download it here:
https://www.gamefront.com/games/crysis/file/crysiswars-mod-sdk-v1-1

I've checked the checksum of the file and it's the same as the offical download, so it should be safe.
(sha256sum: 06db76952ab72666e90d3e0a7714d43177516f563972ead5bd13722a6fa34a34)

As an extra optional download, it would be great. Please add!

I agree, that would be a great addon!

GOG: add this please :)

Sadly, the very nice Crytek removed the download link. Thanks Crytek! ;(

Nope. They just moved the forums.
https://www.cryengine.com/community_archive/viewtopic.php?t=48387

Thanks!

But why they say in the header "version 1.5" and the download is v. 1.1?
"V1.1" I already found and was not the question. Irritated...

I think that the Source Code has its own version number, nothing more.

+1 for the optional download on GOG :)

The installers from those download links warn about not having Patches installed and they say there are dll files missing when you try to run them. Am I missing something? I want to make a map, which appears that it is not going to happen unless GOG packages up the sandbox editor for their version of the game.

[edit] I found that you just have to install directly to the "Crysis Wars" game install folder [/edit]