If you were developing a Unity Engine game on Monday, you did so with the general understanding that you wouldn’t be charged additional royalties or fees beyond your subscription to the Unity Editor ...

For years, the Unity Engine has earned goodwill from developers large and small for its royalty-free licensing structure, which meant developers incurred no extra costs based on how well a game sold.

Junior Joe Tempel leads a cappella group Surreal Sound’s practice Wednesday at Unity High School in Tolono. Tyler Gunn pretends he is holding a microphone during practice as Unity’s a cappella group ...