Solomon's Key (ソロモンの鍵, Soromon no Kagi) is a puzzle game developed by Tecmo in 1986 for an arcade release on custom hardware based on the Z80 chipset.

The score uses a weighted composite of several factors (like levels completed, items found, time and points) which gives the player a good idea of how well the last game was played.

Solomon's Key has many hidden items and secret levels that are hard to find which enhances the reward for playing.

Solomon's Key was designed by Michitaka Tsuruta, who took inspiration from Lode Runner and added the ability to both destroy and create tiles.

The initial game design leaned towards being more of an action title until Tsuruta's boss at Tecmo, Kazutoshi Ueda, suggested it incorporate puzzle elements.

[18] In Japan, Game Machine listed Solomon's Key on their September 1, 1986 issue as being the eighteenth most-successful table arcade unit of the month.

[20] The NES version of the game was released for the Wii Virtual Console on November 19, 2006 in North America[21] and on December 15 in Europe and Australia.

[23] In 1992, a prequel was released for the NES named Solomon's Key 2 (called Fire 'n Ice in North America).