- Fixed a tutorial dead end at Step 8 where the Sewage Ejector was locked behind tech you couldn't unlock yet. It's now available from the start, and lock icons update correctly.
- Explained how to extend the shaft down before building on a new row, and the Shaft button is now highlighted when you need it.
- Added 2X and 4X game speed.
- Added a hint that explains how supplies build up over time and how to use the speed controls while you wait.
- Stopped false alarms (oxygen, heat, water, sewage) from going off during the tutorial while you're playing correctly.
- Fixed the step counter so it shows "Step n / 15" correctly.

Thanks to everyone who reported problems. Keep the feedback coming.