This is a short, repetitive, and poorly written marketing phrase. There is no article to paraphrase. To create a more effective marketing phrase, I would need more information about the game, its target audience, and the desired tone. For example, instead of the given text, a better phrase might be:
Option 1 (Focus on fun):
Hilarious Jumpscares! Prank your friends with this FREE scary game! Download now!
Option 2 (Focus on horror):
Experience terrifying jumpscares! This FREE horror prank game will scare even the bravest players. Download now!
Option 3 (More descriptive):
Unleash the ultimate jumpscare prank! Download this FREE horror game packed with terrifying surprises and scare your friends silly.
These options are more concise, engaging, and clearly communicate the game's purpose. They also avoid the excessive use of capitalization and exclamation points.