Lightslayer was my first shareware game from almost 20 years ago.  I decided it needed an update, so I created one.  New features include:

• Runs in full HD, or in a resizable Window!  (The original was hardcoded to 640x480.)
• Mouse-look, plus mouse support in menus!  (The original had no mouse support at all.)
• Linux and Mac support!  (The original was Windows-only.)
• Hardware-accelerated OpenGL rendering!  (The original used a software raycasting engine.)
• A whole bunch of usability upgrades and balance improvements.
• Wrath of Darkness, my first published freeware game, included as a bonus.

I have elected not to change any of the content - it's still as primitive as ever.