Meteorite is heading your way and and it will hit your apartment building. Unless you do something about it. Here's a thought. Build a ramp.

Intro cinematic and sort of tutorial: https://www.youtube.com/watch?v=qx29AMJSl_I

Build provisional working stations and manage their crew in order to gather enough materials before the time runs out.

Controls: Mouse

If you are not quite sure what to do, here is a run-down:

Tents will appear through the game. By clicking on them you can choose three different upgrades: welding, planks-hammer and slapping. Welding and hammer tents will automatically generate resource for your end-game goal -building a ramp.

However their crew will eventually have a mental break-down and they need to take a break. Their state is indicated by the smiley face on the tent. If click on the icons above tents, its crews will take a break. This way you can avoid time penalty of mental break down.

Slap tents can very quickly recover tents which had a breakdown.

Key to hard difficulty is utilize combos of hammer/welding tents with slap tents and avoid mental breakdowns on the rest.