Within the world of the Dungeons & Dragons fantasy role-playing game, construct is a type of creature, or "creature type". Constructs are either animated objects, or any artificially constructed creature. Most construct are mindless automatons, obeying their creator's commands absolutely, which makes them unbribable and absolutely trustworthy, although some of them are very literal-minded about the execution of their duties, obeying orders to the letter without any concern for their intent. There are exceptions to this rule, however. Certain constructs, such as Inevitables, are every bit as intelligent as mortal creatures. As they lack a metabolism, constructs have a wide array of immunities to frailties and effects that would affect creatures of flesh and blood, such as poison, fatigue, exhaustion, disease or various special attacks and magical effects related to draining a creature's life energy (ability drain, level drain, death effects, etc). As most constructs lack functional internal organs (their animating force does not require any) they are immune to critical hits and forms of damage targeting a creature's weak spots (such as a rogue's sneak attack).