You’ve raced through Sonic the Hedgehog 2 as Super Sonic, but what about Hyper Sonic – the dazzling, screen-flashing, faster-than-light transformation? While Hyper Sonic never officially appeared in Sonic 2 (he debuted in Sonic 3 & Knuckles ), talented ROM hackers have brought him into the classic Sonic 2 zones. Here’s what you need to know about downloading and playing these fan-made ROM hacks safely.

. For years, players dreamed of bringing that ultimate power back to West Side Island.

Watch this guide to see how to simulate Hyper Sonic using the invincibility glitch:

A screen-clearing attack that destroys all visible enemies when you double-jump.

In many versions of this hack, the transformation isn't just cosmetic. You often need to: Collect 50 rings after obtaining all emeralds. Double-jump in mid-air to trigger the Hyper Flash , which destroys all enemies on screen instantly.