“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
- Prioritize upgrading floors with high “understand speed” and “transport capacity” to boost throughput.
- Arrange the upgrade order: elevator → highest ROI layer → manager for “hot” layers.

Overall, “Extra Class” requires you to balance upgrading, automating an experience that is both entertaining, satisfying “blind” to data and optimizing business efficiency.