Generally, mods and maps from official sources like (downloaded through Steam) and CurseForge are considered safe to use. Many in the community believe the chance of downloading a virus from the tModLoader mod browser is extremely low. However, it's important to know that even Steam does not actively scan all Workshop uploads for viruses, so caution is always advised.

A popular choice that includes full arenas, a pylon network, and massive storage filled with modded items. Download: Calamity Endgame World on CurseForge