Baked lighting creates mood. A (navigation mesh) tells AI where to walk. Without a navmesh, bots will stand still or run into walls.

Malicious actors have hidden viruses in fake maps mods. Always run downloaded archives through VirusTotal or your local antivirus.

These are random properties applied to an endgame "Map" item that change the difficulty and rewards. For example, a map might have a mod that says "Monsters deal 50% extra Fire Damage" but gives you "30% increased Item Quantity" in return.