NASA Mars Design Reference Mission 1. Includes a cargo lander that can deliver a Mars Ascent Vehicle, pressurised rover, solar heated balloon, gas balloon and a fission reactor to the surface. Also included is a habitat lander that has wheels so it can moved next to a second habitat to provide a large living volume. Also included is a basic NTR propulsion stage and an Earth Return Vehicle. This add-on includes guidance programs to enable  landers to descend from orbit and make landings close (less than 100 metres) from a chosen target (base or vessel). See documentation for further details. Â
Main updates for v1.4:
1. Improved programs for precision landings
2. Earth Return Vehicle
3. improved aeroshell visuals
4. Large greenhouse
5. Sounding rocket launcher
6. Mars wind forces added to parachutes (can be switched off)