+.\" Hey, EMACS: -*- nroff -*-
+.\" Please adjust this date whenever revising the manpage.
+.Nd Open source clone of the "X-COM:Enemy Unknown" critically acclaimed strategy video game. Requires the original game assets to run.
+.Op Fl d Ar [level | cat=lvl[,...]]
+.Op Fl D Ar [host][:port]
+.Op Fl n Ar host[:port][#player]
+.Op Fl r Ar widthxheight
+.Bl -tag -width ".Fl n Ar host[:port][#player]"
+Use 'config_file' instead of 'openttd.cfg'
+Set debug verbosity for all categories to
+.It Fl d Ar cat=level[,...]
+Set debug verbosity for a specific category
+.It Fl D Ar [host][:port]
+Start a dedicated server. Sets network debug level to 6. If you want to change this, use
+Seed the pseudo random number generator
+Start in world editor mode
+Fork into background (dedicated server only, see
+at start or start a new game if omitted. The
+must be either absolute or relative to the current path or one of the search paths.
+Display a summary of all options and lists all the available AIs, blitters, sound, music and video drivers, graphics sets and sound sets.
+Set the graphics set, see
+Set the music driver, see
+.It Fl n Ar host[:port][#player]
+Join a network game, optionally specify a port to connect to and player to play as
+Password used to join server. Only useful with
+Password used to join company. Only useful with
+Write some information about the savegame and exit
+.It Fl r Ar widthxheight
+Set the sound driver, see
+Set the video driver, see
+Do not automatically save to config file on exit
+Transport Tycoon Deluxe was written by Chris Sawyer and published by Microprose.
+is a free reimplementation.