- Level rendering
- Dungeon loading
- Dungeon saving
- Basic brush tools (place/erase objects and tiles)
- Level management (select, add, remove, arrange levels)
- Level properties (music, boss, player spawn point)
- Better object placement (object stacking, removing topmost object only, etc.)
- Object properties when placing (position, type, enemy beat delay, chest content, etc.)
- Remember game directory choice
- Selection tool
- Picking for brush tools (select tile hovered by mouse cursor)
- More brush shapes (line, rectangle)
- Customizable keyboard and mouse controls
- Undo/Redo
- Extra tools for specific tasks (e.g. bouncetrap chains)
- "Test level" button (requires API from NecroDancer)
- Networking (multi-user realtime editing)