15 OS is a puzzle, released 31 December 1998 on ZX Spectrum.
What 15 OS is
15 OS was released in 1998. It is available on ZX Spectrum only.
How it plays
It is a single-player game with no multiplayer component.
What it launched against
15 OS launched on 31 December 1998, within three weeks of Suikoden II, Super Smash Bros., Crazy Taxi (1999) and Mario Party.
Released around the same time: Suikoden II, Super Smash Bros., Crazy Taxi (1999), Mario Party.
Quick answers
15 OS — frequently asked questions
When did 15 OS come out?
15 OS was released on 31 December 1998 for ZX Spectrum.
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