Team Mode is a house rule based off Team Asia. A copy of Map Collection Volume 1 is recommended, but a second base game and any card holders will do.
Played the same way as Team Asia. If a map can support 5 players, you can play with 4 teams (or 8 players).
On UK, each player gets 20 train cars, or 40 per team. Technology is shared.
You don't need more terrain cards than your partner to double a route in Africa.
On Nederland, each player gets 15 bridge toll tokens. One may choose to move any number of tokens to the share pile as his turn if he notices his partner's pile is low. Each partner gets his own token bonus at the end of the game, which can lead to interesting last minute strategies.
Stocks are shared as a team in Pennsylvania.