Scorched earth
A scorched-earth policy is a military strategy that aims to destroy anything that might be useful to the enemy while it is advancing through or withdrawing from a location. Any assets that could be used by the enemy may be targeted, for example food sources, water supplies, transportation, communications, industrial resources, and even the locale's people themselves.
Scorched Earth (video game)
The last version (1.50) was not released until 1995. In 1.5, the registration feature was removed and instead, only a shareware version was released freely while the registered version could only be obtained through a mail order. Purchasing the registered version allowed the player to use the triple-turreted tank as well as removing the shareware reminders. New to this version were lasers and SuperMags as well as a couple of new skies and the introduction of scanned mountain ranges.