A scenario in progress:

---

To save, press Escape and click SAVE SCENE. Then enter a name (and description if you like) and click the Save button:

---

NOTE: Save / load is not supported in some scenarios, in which case the SAVE SCENE option won't appear.

To load, go to the BEGIN SCENARIO screen, and select the "locally saved" tab. Then select your save, and click the Play button:

---

That's it, everything should be restored to where you left off!

NOTE: If you load your save via LOAD SCENE instead, that will load it into creative mode, and won't run the scenario.