-The game is expected to run on Linux systems that contain the ncurses library.
-(It may also work on other Unix-like systems with ncurses, who knows.) Do the
-following steps:
+The game is expected to run:
+- on Unix systems with a vt100-like terminal environment (xterm will do)
+- that contain the ncurses library
+- and Python3 (version >= 3.2.3).
+
+To build it, this is furthermore necessary:
+- gcc (version >= 4.7.2); some llvm masked as gcc was tested successfully on OSX
+- libc library headers (libc6-dev?)
+- ncurses library headers (libncurses5-dev?)
+
+To build and start, do the following steps: