⏳Time

$$Construction~Time=[t_c*v*a]*{(100-5*LayBours_{n-1})\over100}$$

$$t_c=base ~time\\ v=dynamic~time\\ a=increased~percentage~based~on~building$$

$$1\ \leq LayBours_n\leq\ 14$$

The construction time for a new building can be defined by the equation above.

• t is the fixed time per season.

• v is a variable that represents the dynamic time change based on the total number of buildings.

• a is the increasing percentage of time based on the tier of the building and the number of constructions.

• LayBours is an attribute of building NFTs that can be used to reduce time.

$$t_c=30\\$$

The value of t_c may change randomly from season to season.

$$v = e^{3.61023E-04*n+-1.44409E+00}\\$$

$$0\le n \le7000$$

n is the total number of buildings in the OrbCity ecosystem, and the minimum and maximum values change from season to season. The formula for v may change depending on the maximum and minimum values of n, but the principle is the same.

$$a=increased~percentage~based~on~building$$

Tier	1 count	2 count	3 count	4 count	5 count	6 count
common	100%	110%	120%	130%	140%	150%
rare	150%	165%	180%	195%	210%	225%
epic	250%	270%	290%	310%	330%	350%
unique	400%	425%	450%	475%	500%	525%
legendary	600%	630%	660%	690%	720%	750%

The higher the tier, the more constructions, the higher the percentage. a depends on the tier of the building and the number of constructions. Each construction with the same building NFTs increases the construction time. However, when tiering up a building, the number of constructions is reset.

The maximum number of times a new building can be constructed is 6.

Note: Please note that all figures are subject to change by governance.