Level 2 - Mars Underground Level 3 - Mars City 2 Level 4 - Administration Level 5 - Alpha Labs Sector 1 Level 6 - Alpha Labs Sector 2 Level 7 - Alpha Labs Sector 3 Level 8 - Alpha Labs Sector 4 Level 9 - EnPro Plant Level 10 - Comm Transer Level 11 - Commuications Level 12 - Monorail Skybridge Level 13 - Recycyling Sector 2 Level 14 - Monorail and Level 15 - Delta Labs Level 1 Level 16 - Delta Labs Level 2A Level 17 - Delta Labs Level 2B Level 18 - Delta Labs 3 Part 1 Level 18 - Delta Labs 3 Part 2 Level 19 - Delta Labs Level 4 Level 20 - Hell Level 21 - Delta Complex Level 22 - Central Processing Level 23 - Central Server Banks Level 24 - Site 3 Level 25 - Caverns Area 1 Level 26 - Caverns Area 2 Level 27 - Primary Excavation
