Commands

Tap a tile to move the cursor there. In build mode, a tap places the building on that tile.
Arrows / WASD: move the cursor. Hold to repeat.
Enter / Space / OK: place the chosen building under the cursor.
1 / Q: Build list. Pick a building (tap or Up/Down + OK), then place it with OK or a tap. You stay in build mode to place more.
2 / R: repair a damaged building (5 metal). On a working building, press 2 twice to remove it (half the metal back).
3 / T: Research. Up/Down + OK, or tap a tech twice, to buy it with research points.
4 / F: speed: 1, 2, 3, then pause.
5 / Y: Trade at the spaceport.
Backspace / B: leave build mode, close a list, or go back to the menu (the colony waits for you).
Menu: 1 Campaign, 2 Sandbox (or Daily colony), 3 Log off (press twice).
P / Esc: pause.
Choices menu: pause, how to play, new game, sound, difficulty, save slot, theme.