Wolfenstein 3D is 20 years old. To celebrate it’s been re-released as a browser game.

And as Crikey notes, a 1992 Sydney Morning Herald reviewer was “flabbergasted” with the game: The game, we are warned, is rated PC-13 – Profound Carnage. Good advice. There’s plenty of blood and guts, and the sound effects are blood-curdling, so my sub-13-year-olds won’t be playing.

I remember playing it at my mate Brian’s place back when it was first released — the ancient computer I had at home couldn’t cope with it.

I had a go of it again last night. Sure enough, it worked well in the web browser. After about half-an-hour of shooting Nazis (and Nazi dogs) I felt a bit queasy. I think it was due to focussing on the low-res 3D, rather than the blood and guts.