You will need to have a Big Fish account as well as an external Big Fish Games application manager to play these games, however they’re completely free (and worthwhile since you’re getting ~$150 worth of games for free).
TIP: As you will need to download these games on PC/MAC, right-click on ‘Available on PC/MAC’ on all games you want and ‘Open link in new tab’. Click on the latest tab open and it should have all the games you want in one cart and then you can check out. make sure to check total costs is $0,
https://www.bigfishgames.com/promotions/playaparttogether
for example the first game :
https://store.bigfishgames.com/cart.php?productID=24241&siteID=1&discount=TOGETHER