
1) DOS game 2) Economic policy 3) Literally, restructuring 4) Soviet phraseology 5) Windows game
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https://www.crosswordclues.com/clue/perestroika

(Restructuring) Gorbachev's campaign to revitalize the party, economy, and society by adjusting economic, political, and social mechanisms. Announced at Twenty-Seventh Party Congress in August 1986.
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http://soviethistory.msu.edu/glossary/

(from the article `Union of Soviet Socialist Republics`) Perestroika concentrated initially on economic reform. Enterprises were encouraged to become self-financing, cooperatives were set up by groups of ... ...a market economy with the dictatorship of the Communist Party in China during the 1980s and `90s. In fact, the Soviet leader Mi...
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http://www.britannica.com/eb/a-z/p/43

In Soviet politics, the wide-ranging economic and political reforms initiated from 1985 by Mikhail Gorbachev, finally leading to the demise of the Soviet Union. Originally, in the economic sphere,...
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http://www.encyclo.co.uk/local/20688

a policy of economic restructuring introduced in the late 1980s. Under perestroika, the Soviet state allowed small private businesses to form and loosened its control of industry and agriculture
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http://www.uleth.ca/lib/digitized_collections/ourheritage/Great_Adventures/

[
n] - an economic policy adopted in the former Soviet Union
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http://www.webdictionary.co.uk/definition.php?query=perestroika

Gorbachev's campaign to revitalize the party, economy, and society by adjusting economic, political, and social mechanisms. Announced at Twenty-Seventh Party Congress in August 1986.
Found on
https://irp.fas.org/world/russia/su_glos.html
noun an economic policy adopted in the former Soviet Union; intended to increase automation and labor efficiency but it led eventually to the end of central planning in the Russian economy
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https://www.encyclo.co.uk/local/20974

Literally, rebuilding. Mikhail Gorbachev's campaign to revitalize the communist party, the Soviet economy, and Soviet society by reforming economic, political, and social mechanisms.
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https://www.photius.com/countries/russia/glossary/index.html
No exact match found.