Altar Games, previously known as ALTAR Interactive, was a Czech independent video game developer founded in 1997 in Brno. Altar was one of the most important players in Czech game development during the 2000s, best known for their 2001 breakthrough hit Original War, regarded as a cult title in Czechia and Poland, as well as for their 2004 X-COM spiritual successor UFO: Aftermath and its sequels. The company was a member of IDEA Games, a marketing and commerce supporting association founded in 2005 with Bohemia Interactive and Black Element Software.
On 30 September 2010, Altar Games was acquired by fellow IDEA Games member Bohemia Interactive. Bohemia promised that the acquired companies, including Altar, will continue to operate individually. Former Altar has become Bohemia's Brno studio, working first on ArmA 3. In 2017, Bohemia announced a sequel to Altar's cult classic Original War. Altar founder Martin Klíma had earlier left to produce Operation Flashpoint: Dragon Rising for Codemasters and then co-founded Warhorse Studios. Ex-Altar lead artist and creative director Tomáš Kučerovský (Original War, UFO: Aftermath) became a successful comic book author.
- Fish Fillets II (2007)
- UFO: Afterlight (2007)As ALTAR Interactive:
- UFO: Aftershock (2005)
- UFO: Aftermath (2003)
- Legendy Dračího Doupěte (2003) (SMS-based mobile game)
- Proroctví (2002) (boardgame)
- Original War (2001)
- Fish Fillets (1998)
Altar Games closed and discontinued operations in 2010.