Era4X/research

Research list in Era4X

Tier 1
Name	Description	Time(In turns)	Requirements	Unlocks
Corvette Development	Enables construction of universal corvettes	60	None	Another corvette upgrades
Corvette Upsizing 1	Enables construction of larger universal corvettes. All slots increased by +1	40	None	Corvette Upsizing 2
Corvette Upsizing 2	Enables construction of even larger universal corvettes. All slots increased by +1	40	Corvette Upsizing 2	Corvette Refinement 2
Corvette Refinement 1	Improve the universal corvette. All slots increased by +1.	40	Corvette Refinement 2	Unlocks next tier. Corvette Refinement 1
Corvette Refinement 2	Improve the universal corvette to the limit. Improves space force capacity of the universal corvette.	40	Corvette Refinement 1	None
Warp Research	Enables personal interstellar warping. 「Warp」will be available from spaceports.	120	Corvette Development	None
Size 1 Equipment Development	Enables production of Size 1 equipment.	120	Corvette Development	None
Resource Surveyor Module	Develop a module to search for hidden resources in the sector.	200	Resource Surveyor Module	None
		0	None	None
Tier 2
Name	Description	Time(In turns)	Requirements	Unlocks
Frigate Development	Enables construction of universal frigates.	100	Corvette Development	Frigate Upsizing 1
Frigate Upsizing 1	Enables construction of larger universal frigates. All slots increased by +1.	80	Frigate Development	Frigate Upsizing 2
Frigate Upsizing 2	Enables construction of even larger universal frigates. All slots increased by +1.	80	Frigate Upsizing 1	Frigate Refinement 1
Frigate Refinement 1	Improve the universal frigate. All slots increased by +1.	80	Frigate Upsizing 2	Frigate Refinement 2
Frigate Refinement 2	Improve the universal frigate to the limit. Improves space force capacity of the universal frigate.	80	Frigate Refinement 1	None
Medium SP Module Development	Enables development of medium-sized spaceport modules. Spaceport slots increased by +4.	300	Frigate Development	None
		0	None	None