Smart answer:

Your search for What is alternative name for Hearts of Iron IV returned the following results:

Hearts of Iron IV

Hearts of Iron IV is a so-called ‘grand strategy’ game that focuses on the period around the Second World War.

Source:

a sequel to the World War II RTS Hearts of Iron III

Hearts of Iron IV is a sequel to the World War II RTS Hearts of Iron III, and in almost every way, improves upon the World War II RTS Hearts's predecessor.

Source:

the sequel to Hearts of Iron

Hearts of Iron IV is the sequel to Hearts of Iron.

Source:

the sequel to Paradox Development Studio's game Hearts of Iron 3

Hearts of Iron IV is the sequel to Paradox Development Studio's game Hearts of Iron 3.

Source:

Man the Guns and Crusader Kings II: Holy Fury

These are Hearts of Iron IV: Man the Guns and Crusader Kings II: Holy Fury.

Source:

Paradox’s recently released World War II-themed grand strategy game,

Hearts of Iron IV, Paradox’s recently released World War II-themed grand strategy game, has sold over 200,000 copies worldwide in less than two weeks after World War II-themed grand strategy game's release, making World War II-themed grand strategy gamethe publisher’s fastest-selling historical strategy game to date.

the latest instalment of Paradox Development Studio’s WW2 themed grand strategy game, which has been in development for some time and seen a number of delays

For those unaware, Hearts of Iron IV is the latest instalment of Paradox Development Studio’s WW2 themed grand strategy game, which has been in development for some time and seen a number of delays.

a so-called ‘grand strategy’ game that focuses on the period around the Second World War

Hearts of Iron IV is a so-called ‘grand strategy’ game that focuses on the period around the Second World War.

Source:

a war strategy game developed by Paradox Development Studio and published by Paradox Interactive

Hearts of Iron IV is a war strategy game developed by Paradox Development Studio and published by Paradox Interactive.

Source:

a grand strategy video game developed by Paradox Development Studio and published by Paradox Interactive

Hearts of Iron IV is a grand strategy video game developed by Paradox Development Studio and published by Paradox Interactive.

Source:

a real time strategy game being developed Paradox Development and is due to be published by Paradox Interactive for Windows PC, Linux, and Mac OS in 2015

Hearts of Iron IV is a real time strategy game being developed Paradox Development and is due to be published by Paradox Interactive for Windows PC, Linux, and Mac OS in 2015.

Source:

an epic historical simulator that allows you to experience the events of the Second World War as any country

Hearts of Iron IV is an epic historical simulator that allows you to experience the events of the Second World War as any country, and perhaps, change history.

an epic historical simulator that allows you to experience the Second World War as any country

Hearts of Iron IV is an epic historical simulator that allows you to experience the Second World War as any country, and perhaps, change history.

heart's

I guess that's why heart's called Hearts of Iron IV.

Source: