“Extra Class” is an idle-management game with the theme of running a multi-story tutoring center. You will transform into a manager, build and optimize each “classroom” on each floor, hire teachers-managers, upgrade equipment to increase revenue. 1. Main interface & core mechanism - Each floor represents a classroom, with a subject symbol and the corresponding “Level” figure. - Next to each floor there are numbered elevator doors, used to speed up the movement of students between classes. - The top bar shows earnings per second (cash/s), cash and diamond balance. 2. Upgrade & automate - Click on each floor to open the “Overview” or “Total Extraction” panel: see the speed of understanding the lesson, moving speed, capacity, number of students… - Upgrade x1/x10/x50 or Max to increase the indexes: directly increase the money earned per second. - Hire a manager (Junior/Senior) to automatically activate and reduce the upgrade cost for a certain period of time. 3. Long-term strategy...