Research Notes only become available for purchase the morning after completing Mission: Adventure of the Starlight Island.
|Research Center Exchange|
- Main article: Factory#Upgrades
Research Notes can be used at the Smart Control Center, a console to the right of the Auto workstation, to upgrade the speed at which the Factory produces items.
According to the table under Factory#Upgrades, the player needs to purchase at least 55 Research Notes, to realize all achievable factory upgrades.