Run in window mode
.TP
.B \-g, \-\-geometry WIDTHxHEIGHT
-Run SuperTux in given resolution
+Run SuperTux in given resolution (eg. \-g 800x600)
+.TP
+.B \-a, \-\-aspect WIDTH:HEIGHT
+Run SuperTux with given aspect ratio (eg. \-a 4:3)
.TP
.B \-\-disable\-sfx
Disable sound effects