- Z (DOS) – release of 1996, for operating system MS-DOS. Look-and-feel: 20 levels for the single player; the multiplay mode is maintained (Lan, Dual-up).
- Z95 – " Z 95 & Expansion", release of 1998, for operating system Windows 95. Look-and-feel: 20 original levels for the single player from Z (DOS), 15 additional levels; the multiplay mode is maintained (Lan, Dual-up).
- Ports Z - for the PlayStation and Sega Saturn – 1997-1998.
- Z mobile – the version for mobile telephones
- Z-COOL – 1997 ???, updating Z (DOS). Difference: built-in NO-CD.
- Z_DOS_XP – 2006 ???, updating Z (DOS). Difference: built-in NO-CD, correct work in operating system Windows XP.
- Z95 for XP (Antares Patch) – 2007 ???, updating Z95. Difference: correct work in operating system Windows XP and Windows Vista; includes ZEditor to add new levels. Details look here.
Today there is no necessity to use early versions of Z directly (for example using a DosBox).
Z95 with Antares Patch works well!