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Realm Size Value is a Realm Management value determined by roughly how much area the realm occupies, in square miles. Note that a realm's raw size only allows you to add more things to an empty realm--owning the entire Antarctic doesn't mean much if no one lives there--or no one can!

The formula is (ln(2*Area) / ln(10)) * 3 = Size as Area = e^(ln(10)*Size/3)/2[1] This simplifies to log(2*Area)*3 = Size[2]

This table lists the actual size values as notes. As with Size one goes with the closest integer.[3]

Realm
Size
Value
Area (in square miles) Examples
0 0.5 or lower Vatican City (109 acres; 0.170313 mi²)[note 1]
1 1.1 Monaco (499 acres; 0.779687 mi²)
2 2.3
3 5.0
4 10.8
5 23.2
6[note 2] 50 Liechtenstein (61.78 mi²)[note 3]
7 108
8 232 Singapore (281.2 mi²)[note 4]
9 500 Hong Kong (427 mi²)[note 5]
10 1,077 Luxembourg (998 mi²)[note 6]
11 2,321
12 5,000 Jamaica (4,244 mi²}[note 7]
13 10,772
14 23,208 Denmark (16,577 mi²) [note 8]
15 50,000 South Korea (38,691 mi²)[note 9]
16 107,722 Ghana (92,099 mi²)[note 10]
17 232,079 France (248,573 mi²)[note 11]
18 500,000
19 1,077,217
20 2,320,794
21 5,000,000 United States (3.797 million mi²)[note 12]; Russia (6.612 million mi²)[note 13]
22 10,772,173 Moon (14.6 million mi²);<[note 14]
23 23,207,944 Krypton[note 15]
24 50,000,000 Earth (land area); Mars
(+0.5) or x * ~1.467799
(+1) or x * ~2.154435

Notes[]

  1. Below 0.5 the formula produces negative values which is why Vatican City gets a value of -1
  2. Floods usually only get this large. Above this size, only part of the realm is affected. (see p.39)
  3. Actual size value is ~6.276
  4. Actual size value is ~8.250
  5. Actual size value is ~8.79
  6. Actual size value is ~9.900
  7. Actual size value is ~11.79
  8. Actual size value is ~13.562. This is for the country not the Danish Realm which includes Greenland kicking it up to 2,220,072 mi² or +19.942 which rounds to +20
  9. Actual size value is ~14.666
  10. Actual size value is ~15.796
  11. Actual size value is ~17.0896
  12. Actual size value is ~20.641
  13. Actual size value is ~21.36
  14. Actual size value is ~22.4
  15. Krypton as depicted in Action #500 (Oct 1979) pg 31

    Krypton as depicted in Action #500 (Oct 1979) pg 31

    Krypton has had so much variation that how this could be figured is unknown. For example, Krypton in Action 500 pg 31 is shown far larger than Earth.

References[]

  1. Re: GURPS Realm Management post #64
  2. From natural log to log base 10
  3. GURPS Realm Management thread post 32, stated as looking correct by book's author on post 33