Tamás Kreiner entered the world of music when he established his company, Amnesty Design in 1991. He soon began work on several successful solo musical projects, including Soundtrack for the Game Reunion, which gave the base of his reputation. After many years, Amnesty Design has evolved to the internationally renowned company, Digital Reality, where Kreiner has composed scores for Imperium Galactica and the sequel, Imperium Galactica II: Alliances.

During these years Kreiner pioneered the use of combining old and new musical technologies and expanded his experience in both composing and sound designing, which later has granted him great reputation in the industry. In 2000 he received The British Academy of Film and Television Arts Award (Best Original Game Music) for his work on Imperium Galactica II.