Nightly builds are builds (versions) of a software that are untested and automatically built every time there is an update on the main branch. Now that Skyrim Together's Nightly Builds have been deprecated in favor of Tilted Online, they will no longer receive any updates. However, the last Nightly Build is still more playable than Tilted Online is in it's current state, so this guide serves as an explanation for getting started with the Nightly Builds.