This is a title and short description likely for a mobile game app. It's already quite concise, so extensive rewriting isn't necessary for paraphrase. Here are a few options for rewording, keeping the same tone and style:
Option 1 (Slight rewording):
Jumpscare Horror Prank Game! Scare your friends with this FREE jumpscare game! Download now and unleash the scares! Scary pranks and horror await!
Option 2 (More emphasis on free):
FREE Jumpscare Game! Scare your friends with this terrifying prank game! Download now for endless jumpscares and horror fun!
Option 3 (More descriptive):
Ultimate Jumpscare Prank! Give your friends the fright of their lives with this free horror game packed with jumpscares! Download now and start the scares!
These options maintain the original's excitement and use of capitalization for emphasis, while slightly altering the wording to avoid exact duplication. Note that without more context (like a longer description or app store listing), more significant rewrites are difficult to create while retaining the original intent.
