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Hey, thanks for participating in Week Sauce. I use the itch.io app to install games, and for some reason it doesn't want to install Snailz. It starts, then it says "Cannot read property 'build' of undefined". May be related to nothing appearing in the install build menu, makes me think you need to select if it's a Windows binary or whatever. 

Hello. I checked and I see that all the games I made in Unreal Engine have this problem. I use the default build settings so I don't know what might be the cause of this.  Downloading the archive manually doesn't have any problems.
Thank you for letting me know.

I think it's more an itch.io configuration issue than a problem with the binary. You need to check at least one of the checkboxes under the Uploads section of your game, so the itch.io app knows what are the platforms the binary works on.