Best universal ROBLOX script?

The best universal script that works in pretty much all games would have to be Orca.

Its open-sourced to. :D

It has a beautiful UI, great fly/no-clip system, speed, teleport, spectate players, and comes with other scripts built in such as ESP.

Orca itself has never been detected from experience. Some scripts such as CMD-X may be detected in certain games.