This one's a bit different. You are Director of exactly one Tram
Company (the Director's cert is 50% and can't be sold); Tram Companies
pay revenue and distribute it, own trams, and have a share price, but
they own individual lines which build track and run trams to gather
revenue.

In addition to these there are "Stadtbahn" companies traded in 10%
shares which have no Director; they don't build, but operate
automatically on track built by the tram lines. The orange-edged tiles
with dashed track are used by this.

There's a fixed series of ORs. Tram purchases don't unlock tiles and
every kind of tram runs for the same nominal revenue; what pushing the
trams does do is increase the maintenance cost of older trams making
them unviable to operate. The OR series unlocks more expensive trams
and reduces the price of each available type. Companies can scrap
trams "at any time", although I suspect 18xx.games only lets you do it
at times it makes sense.

Page 5 of the rulebook talks about green hexes and light red hexes;
these have been subsumed into the usual 18xx.games reds and greys. The
gotcha here is that the D20-E19-E21 reds can be upgraded. The purple
tiles represent railway stations (not in the sense of having a token
spot, but in the sense of connecting to Vienna's national railway).

The game starts with an auction of privates which represent Vienna
landmarks (so are based in specific hexes). This is a fairly normal
auction with each item being sold in succession. Privates can be sold
to the Bank for face value or bought by Tram Companies at prices
between 1G and face value; running a tram to a private you own is
worth +20G revenue.

You can't sell shares in the first share round. There's a 60% holding
limit in any company, and an ordinary cert limit. Shares drop a spot
on the market for each share sold and go up one at the end of the
share round for being entirely player-owned.

At the start of the first share round (after the auction) you get an
extra 350G which you can and must spend on starting a Tram Company as
your first action. Tram Companies are fully capitalised, 10x share
price immediately. After the first SR, the Priority Deal and play
order are in descending order of player money.

ORs are divided into "Company Rounds" and 2-3 "Line Rounds". There's a
Company Round after each set of Line Rounds, and there's one before
the very first Line Round.

In a Company Round you distribute your revenue from the Line Round -
you can withhold any proportion. The "Stadtbahn" companies determine
their nominal income (always the maximum available) and pay it out
during CRs. You can septuple-jump; the jump size is based only on the
payout, not the existing share price.

You also buy trams here and rearrange them between lines (at most 1
per line). A Tram Company (not a line) must own a tram; the Director
is liable for shortfalls; you don't go bankrupt but you're loaned
money in 100G chunks. You can't pay back loans but they're worth -200G
at the end of the game. The Director can buy a more expensive tram
even if they are taking loans. Companies cannot buy trams from each
other.

Next is a "line auction", where companies bid on the tram lines
available (which is not all of them; a random selection is available
at the start of the game and replenished during it). A company can
only buy one line per CR, and can only own three total. After the line
auction companies can buy and rearrange trams (even if they bought no
line) and once again are obliged to own a tram.

A line may do all of the following when it operates. Costs are paid by
the parent Tram Company.

Lay or upgrade one tile. (If lay a yellow tile, I infer it can't be an
orange-edged Stadtbahn tile).

Pay 20G to lay a yellow Stadtbahn tile. Each Stadtbahn hex is printed
with a "bonus action" which you may then take - lay an additional
yellow tile, lay a red tile on D20-E19-E21, lay a purple station tile,
do a green upgrade (from the second OR), or be permitted to lay a
second token.

Place a token (or two if a "bonus action" permits it). Remove a
Stadtbahn token for 40G (it is not then compulsory to use the
resulting spot).

Upgrades are permissive; you don't have to be able to reach any of the
new track. Stadtbahn hexes aren't special in any way for upgrading.

All trams run for an unlimited length; the only difference in them is
that older trams will incur higher maintenance costs. (The final tram
type has a -200G maintenance cost, ie, pays bonus revenue). You can't
run on the Stadtbahn's dashed track. If maintenance costs make revenue
negative it comes from the parent Tram Company then the Director.