Vampire’s Castle Adventure

This short text adventure (written in a mere 181 lines of BASIC code) has the
player exploring a vampire’s lair in search of the game’s “concealed goal.”
Not surprisingly, room descriptions are extremely terse and there aren’t a
whole lot of actions to perform. The parser accepts two-word commands (though
it only looks at the first three letters of any given word) and has a
vocabulary of about seventy words.

Vampire’s Castle Adventure