From Brian Moriarty's tribute to Dani Bunten: "Ozark wanted to follow up Seven Cities [of Gold] with a computerized edition of one of the classic Avalon Hill board games, but Electronic Arts had other ideas.
Some executive arm-twisting and a substantial cash bribe resulted in a sequel*, Heart of Africa* for the Commodore 64, which continued the formula of action and strategy, exploration and history. It achieved less than half the sales of its predecessor."
Review By HOTUD
English 
Comments and reviews
It was revolutionary for its time, but unfortunately it was never nearly as successful as Seven Cities of Gold. Admittedly, it had some flaws that might have contributed to that. I'm working on a fan remake of the game, doing my best to avoid those issues while still conveying the original's charm:
https://github.com/PatrickVonMassow/Heart-of-Africa-Remake
So far I can't seem to get this game to play on any Commodore 64 emulator for Android.
Wow.....never knew Seven Cities had a sequel!!!
No comment nor review for this game at the moment.