i believe running a pdp real or simulated and matching the original programming environment would produce the most accurate representation for the original adventure i have a simulated pdp running see my url above with session logs on how to set this up however the matching old version of the pdp operating system and fortran compiler crowther used are unknown and may be lost a pdp with later os and fortran still compiles and runs crowther's and crowther's wood's code as is and all print terminal input output can be logged below is crowther's adventure see build adv txt as it would have been printed on a pdp 's hard copy terminal run adv welcome to adventure would you like instructions yes somewhere nearby is colossal cave where others have found fortunes in treasure and gold though it is rumored that some who enter are never seen again magic is said to work in the cave i will be your eyes and hands direct me with commands of or words errors suggestions complaints to crowther if stuck type help for some hints you are standing at the end of a road before a small brick building around you is a forest a small stream flows out of the building and down a gully go in you are inside a building a well house for a large spring the font and maybe the command to start the adventure program may differ with the true original hard copy i think the print out may be the more accurate representation since that was how crowther wrote and played the game