Spawn Highlight is a Vintage Story mod by MistAway. Spawn Highlight marks blocks where drifters may appear, helping you find unsafe spots around your base. Toggle the overlay with Ctrl+L.

Why this mod is worth installing
Useful for players securing a base who want to inspect spawnable surfaces without checking every block manually. It is a client-side utility focused specifically on drifter prevention.
What Spawn Highlight adds
The overlay colors potential drifter spawn blocks red. Blocks that are safe because their non-natural light level is high enough appear green, while surfaces that can never support a drifter remain unmarked.
Spawn Highlight evaluates nearby blocks using their upper face, the space above them, and artificial light. This makes it easier to locate overlooked dark floors, while still accounting for special conditions such as sunlight and temporal storms.
Press Ctrl+L to show or hide the visualization; the shortcut can be changed through the game’s keybinding settings. The tool is intended for checking an existing build rather than changing world mechanics.
Where to download Spawn Highlight
The official Vintage Story Mod DB page is the right place to get the current release through the in-game mod manager.