Ep 1 Radioactive Ocean, Extra hard : Oxygen not included
38:43
Ep 2 Let them eat Dirt, Extra hard : Oxygen not included
46:49
All the Small things : Oxygen not included ep 28
37:15
Ep 4 : I have got to stop hiring dupes, Extra hard : Oxygen not included
41:22
Ep 19 : Protecting ourselves from all the radiation, Extra hard : Oxygen not included
37:20
Ep 34 : Designing stuff in ONI is a case of breaking things a lot, Extra hard : Oxygen not included
34:27
Rocket chimneys are hard : Oxygen not included ep 27
37:08
Ep 17 : Obtaining coolant is a bit tricky, Extra hard : Oxygen not included
34:53