File Extension UBI File Format Animation UBISOFT UBI stands for Animation UBISOFT. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question Interfaces and Properties Add animation to a phrase in a PowerPoint slide Animated gif problem in VB.net?