Talk:The Black Cauldron (video game)/@comment-31514915-20170316044236/@comment-30591854-20180721182943

Most likely because the game is an adventure game for which Sierra used their AGI system (Adventure Game Interpreter), which was never designed to be used on cartridges like the NES uses. Also the amount of data of the game was pretty high... I know because I have had a copy of the game. I do not know what kind of data limits the NES had. Also the AGI system was designed to work with commands. If you want to open a door, walk to the door and type "OPEN DOOR". For this particular game they decided to replace that with the function keys, but that was an exception case. This would have been the first and only game to be released on NES with the AGI system, and making the AGI compatible with all the systems already supported at the time was already a costly matter, as AGI is written in 100% assembler code, and since assembler is different on each platform, and there were quite a lot in those days, it had to be completely recoded. Altogether, it would have been too expensive for this type of game and the tools used to create it, to create. Yeah I used to be a Sierra fan, so I know the old games of theirs too, and despite the game being created by order of Disney, Sierra did use the regular tools they also created other games like King's Quest, Police Quest and Leisure Suit Larry with.