I had made a poll about the best feature in simutrans at the german forum.
At the moment we have 33 votes.
passangers, post and goods have real objectives (17 voters) 51.52%
undergroundmode (4 voters) 12.12%
many different types of vehicles (3 voters) 9.09%
the management (lines, statistics, overviews, finance) (2 voters) 6.06%
the way construction (2 voters) 6.06%
the mapeditor (2 voters) 6.06%
many adjustments befor the game (1 voter) 3.03%
industry has contracts (1 voter) 3.03%
maps can have forests, mountains and rivers (1 voter) 3.03%
the networkmode (0 voters) 0.00%
special construction tools (f.e. powerlines) (0 voters) 0.00%
Link: http://www.simutrans-forum.de/forum/thread.php?threadid=6613
Everyone can vote only one feature?
Yes! And this is very difficult! ;)