Styx is a shoot 'em up maze video game published by Bug-Byte Software in 1983.
It was the first ZX Spectrum game written by Matthew Smith, and the first of his three-game contract with the company.
The first maze section is similar to Wizard of Wor and enemy spiders regenerate when shot until the generator-a larger spider-is destroyed.
In the final stage the Grim Reaper sends energy bolts that ricochet around the screen.
The player is armed with a laser that only shoots horizontally, although it can destroy several enemies with one shot.