 | Zero Time (clone of: galaxian) | 1979 | bootleg? (Petaco S.A.) | zerotime | Shooter / Gallery | 0.00 |
 | Zero Wing (1P set) | 1989 | Toaplan | zerowing | Shooter / Flying Horizontal | 7.67 |
| Zero Wing (2P set) (clone of: zerowing) | 1989 | Toaplan | zerowing2 | | 0.00 |
 | Zero Zone | 1993 | Comad | zerozone | Puzzle / Drop *Mature* | 6.00 |
 | Zeroize (DECO Cassette) | 1983 | Data East Corporation | czeroize | Unplayable | 0.00 |
| | Zhong Guo Long (China, V010C) (clone of: drgnwrld) | 1995 | IGS | drgnwrldv10c | | 0.00 |
| | Zhong Guo Long (Japan, V020J) (clone of: drgnwrld) | 1995 | IGS / Alta | drgnwrldv20j | | 0.00 |
| | Zhong Guo Long (Japan, V021J) (clone of: drgnwrld) | 1995 | IGS / Alta | drgnwrldv21j | | 0.00 |
 | Zhong Guo Long II (ver. 100C, China) (clone of: drgw2) | 1997 | IGS | drgw2c | Puzzle / Match | 2.00 |
| | Zig Zag (Ace) (sp.ACE) (set 1) | 1969 | Ace | sp_zigzg | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 10) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgi | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 11) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgj | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 12) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgk | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 13) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgl | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 14) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgm | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 2) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzga | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 3) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgb | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 4) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgc | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 5) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzgd | | 0.00 |
| | Zig Zag (Ace) (sp.ACE) (set 6) (clone of: sp_zigzg) | 1969 | Ace | sp_zigzge | | 0.00 |
