Ninja Kiwi and Bloons are trademarks of Ninja Kiwi Limited, registered in the U.S. and other countries
iPhone and iPad are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.
SAS4 is currently down for maintenance and upgrade to be compatible with the latest Flash player. SAS4 will still work if you are using Flash version 29 or earlier.
Or you can play SAS4 on Steam using your PC or Mac, or on mobile phone or tablet. Note that your web account data will not transfer to Steam or Mobile.