Here is the power system of ARCANIA.
F Rank (Power Level: 1 to 50).
E Rank (Power Level: 50 to 120).
D Rank (Power Level: 120 to 250)
C Rank (Power Level: 250 to 400)
B Rank (Power Level: 400 to 650)
A Rank (Power Level: 650 to 1000)
S Rank (Power Level: 1000 to 2500) They are City level Powerhouses.
SS Rank (Power Level: 2500 to 5000) They are National Level Powerhouses.
SSS Rank (Power Level: 5000 and above) They are continental level powerhouses.
Spoiler : There are more ranks after this.
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The total number of zones is 7 with each varied different races.