Absolute previously released a "v5" version that is free. It is a standalone program rather than an in-game overlay, but it still contains the FPS bypass and many basic hacks.
: Purchasing a license usually grants the user access to future versions, such as the more recent Mega Hack v9. Seeking "Free" Alternatives megahack v7 free
While v5 doesn't have the fancy "in-game" menu (you have to Alt-Tab to use it) and lacks some of the newer v7/v8 features, it still includes the essentials: FPS Bypass Practice Music Hack Icon Bypass Level Edit features How to Get Mega Hack Safely Absolute previously released a "v5" version that is free