Matches are your best friend. Don't waste them in rooms that already have a faint ambient light.
Much like the Frictional Games titles, you interact with the world by clicking and dragging to open drawers, swing doors, or move objects. File: House.of.Caravan.v1.0.1.zip ...
The game is relatively short, often described as a "room escape" experience on a larger scale. Matches are your best friend