About 18JP-T, from BoardGameGeek:
18JP-T is a Japanese 18xx game set in the Greater Tokyo Area.
The rules for 18JP-T are identical to 1830, with the following changes:
The map shows the Greater Tokyo Area.
The hexes are numbered from Ta76 to Tl198.
Tokyo city consists of 7 hex marked T, upgrades cost ¥80 from yellow to green and again for green to brown.
There are special "T" tiles for Tokyo in green, brown and grey (J01 to J13).
There are 6 privates (A to F).
There are 11 companies (grey, yellow, purple, dark-green, light-blue, red, pink, brown, light-green, orange, dark blue).
7 companies start in one of the 7 Tokyo hex, only 4 companies start outside of Tokyo.
Each company has one or two special powers.
Most companies have a red area as destination which provides double income.
There are no sharp curves tiles, neither for plain tiles, small station tiles nor yellow large station tiles.
Yellow tiles with one or two small stations can never be upgraded.
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