Thunderstorm
From SuperTux
SuperTux 0.3.x: This text describes features that can be found in SuperTux 0.3.0 or later
When the Thunderstorm goes off, you will hear distant thunder. Shortly afterwards a lightning strikes, making the screen flash. All water in the level is electrified when the lightning hits and reverts to normal afterwards.
The Thunderstorm can be configured to go off at regular intervals or alternatively be scripted. See ScriptingThunderstorm for a quick reference.

