Talk:Stairs that can be ascended, but not descended
Not A Programming Error? Erroneous Level Design?
Not a programming error? I don't think one-way stairs was an intended feature by John Carmack. Erroneous level design? Much like with other bugs, I've seen maps that deliberately exploit this as a feature, such as MAP08 of Alien Vendetta. --Shadow Wizard 16:25, March 28, 2010 (UTC)