4th Unit, The (1988)(Data West)(Disk 1 Of 2)(Disk A)
4th Unit Act 4 Zero, The (1990)(Data West)(Disk 3 Of 3)(Disk C)
4th Unit Act 4 Zero, The (1990)(Data West)(Disk 2 Of 3)(Disk B)[a]
4th Unit Act 2, The (1988)(Data West)(Disk 1 Of 3)(Disk A)[a]
4th Unit, The (1988)(Data West)(Disk 1 Of 2)(Disk A)[a]
4th Unit Act 5 D-Again, The (1990)(Data West)(Disk 1 Of 4)(Disk A)