As Sean Reilly, the co-developer of Vagabones, a stylized co-op roguelike action adventure where you play as dogs inspired by The Legend of Zelda's Tri Force Heroes and Four Swords, explained, he decided to create this level editor himself after finding nothing suitable on the Asset Store.
The existing 3D tilemap editors were too slow, as they created a separate GameObject for each tile. This tool uses instanced drawing in edit mode and then bakes the tiles into a single mesh for each material type. Since the game features randomly generated dungeons, the editor also includes tile masking, allowing developers to connect paths and dynamically add or remove objects based on which entrances are enabled.
Sean Reilly also shared the code for the menu on the right, using GUILayout.Toggle with a button style and a custom grid layout. However, it would be fantastic if this editor were released as a standalone tool.
