If you are looking for a free way to play legally, you can download the Shareware version , which includes the first hub (the Seven Portals) for free to test the game before purchasing.
: The game introduced a non-linear level structure where players travel back and forth between maps within a "hub" to solve complex environmental puzzles. HeXen: Beyond Heretic Free Download
: Built on an evolved version of the Doom engine, it features vertical looking, jumping, and destructible environments. Availability and Official Access If you are looking for a free way