It would be helpful if you could clarify what stage of the installation is the problem. Downloading or Copying? https://sourceforge.net/projects/wesnoth/files/wesnoth-1.12/wesnoth-1.12.5/Wesnoth_1.12.5.dmg/download
While investigating the situation we came across this list of false positives for the NSIS installer framework, which is what our Windows packager uses to er, package the Windows build. A cursory glance at their forums also suggests this is still an issue affecting other NSIS-based installers.
I can't vouch for the veracity of any of this information, though. I'm not even a Windows user.
There were different space mods for Wesnoth in the past. The best one (in my opinion) was the Galactic Empires Era. Luckily it was ported to 1.14 and is still updated infrequently.
Yup! the only game that haven't eventually uninstalled since getting my phone. I just figured out you can get it to play in portrait mode too.