- Freeform construction on multiple floors.
- Variety of room types.
- Build elevators and stairs for intra-floor relations.
- Supports multiple resolutions.
- Full plugin system, including a scripting API for rooms.
- Even more room types.
- Multiple elevator types, plus escalators.
- Underground construction.
- Variety of entry points to the tower, including subway stations and monorails.
- Building decorations, such as water, fountains, plants, trees.