-- Configuration local speedThreshold = 150 local bunnyHopDelay = 0.05

First, let’s clarify the mechanic. Bunny hopping is a series of consecutive jumps performed while strafing in mid-air. When executed perfectly, the game’s engine (a heavily modified Source Engine) allows you to preserve, or even increase , your momentum beyond the normal running speed.

No. The server owner has enabled the feature. It is as "verified" as allowed by that server’s rules. In fact, competitive leagues like ESL L4D2 or L4D2 Versus Open often disable it, but casual competitive servers embrace it as a skill equalizer.