Takeshi no Chōsenjō (たけしの挑戦状, lit. Takeshi's Letter of Challenge), officially translated as The Ultimate Challenge from Beat Takeshi and popularly known as Takeshi's Challenge, is a 1986 Japanese action-adventure video game developed by Nova and published by Taito for the Family Computer (known internationally as the Nintendo Entertainment System). The game was designed by entertainer Takeshi Kitano and is centered on a salaryman who seeks a treasure on a remote island in the South Seas. Takeshi no Chōsenjō has been negatively received in retrospect due to its unreasonable gameplay requirements that are difficult to clear without foresight.