Ultrasoft was a computer game developer and computer game publisher located in Bratislava, Slovakia. The company specialised in the development and publishing of games for the ZX Spectrum home computer. With over 40 titles published, its most successful including the platform game Towdie and puzzle games Atomix and Hexagonia – Atomix 2. Ultrasoft also acted as an exclusive distributor within the territory of Czechoslovakia for Ocean Software game software house based in the UK. Apart from computer games, the company also published a dozen or so non-game titles, mostly for learning foreign languages, as well as text, image, sound and music editors.