Kickstarter https://www.kickstarter.com/projects/seriouspoulp/the-7th-continent-what-goes-up-must-come-down
English - The 7th Continent: Dans les Airs, Sous la Terre was funded on the Crowdfunding Kickstarter (See the campaign) platform on the Oct 19, 2017, the campaign lasted 23 days. 43,733 people helped funded the game, whose the amount requested was $40,000.00. Thanks to these 43,733 people the game could be funded up to $7,072,757.00, ~17,681.89%.
Boardgamegeek https://boardgamegeek.com/boardgameexpansion/312514/7th-continent-prison-clouds
English - This expansion contains a brand-new curse, allowing you to explore the skies above the continent in a hot-air balloon. You do not need this expansion if you already have the What Goes Up, Must Come Down expansion from the Kickstarter campaign.