Ion Storm

Ion Storm, L.P.
Company type	Subsidiary
Industry	Video games
Founded	November 15, 1996 in Dallas, Texas, US
Founders	John Romero; Tom Hall; Todd Porter; Jerry O'Flaherty;
Defunct	February 9, 2005
Fate	Dissolved
Headquarters	Austin, Texas, US
Key people	John Romero; Tom Hall; Warren Spector
Parent	Eidos Interactive (1999–2005)

Ion Storm, L.P. was an American video game developer founded by John Romero and Tom Hall, both formerly of id Software. Despite an impressive pedigree and high expectations, the company only produced one commercial and critical success, 2000's Deus Ex.

The company was founded in Dallas, Texas in November 1996; a branch in Austin, Texas was opened in 1997. In April 1999, Eidos Interactive acquired 51% of the company in exchange for advances to the developers. The Dallas studio closed in July 2001, leaving the Austin studio as the new headquarters. After financial struggles at Eidos Interactive, the Austin studio followed with its own closure in February 2005.