Ok, here is my Sega Master System, Genesis and Sega CD games/systems:

Sega Master System:

Games (complete unless noted)

Ghost House (no instructions)
Hang On & Safari Hunt
Out Run
Fantasy Zone The Maze
Action Fighter
Enduro Racer
Choplifter (no instructions)
Missle Defense 3-D
Ghostbusters (no instructions)
World Grand Prix
Gangster Town
After Burner
Zaxxon 3-D
Thunder Blade
Double Dragon
Maze Hunter 3-D
Shooting Gallery
Alex Kiddin Miracle World
Global Defense (?, part of label ripped off, cart only)
Thunder Blade (cart only)
Cloud Master (cart only)
TransBot (this is a sega card edition, complete)

Sega Genesis:

Games (complete unless noted):

Sonic 3
Sonic Spinball
Sonic & Knuckles (no box)
Sonic 2
Alisia Dragoon (no instructions)
Bio Hazard Battle
Phelios (no instructions)
Contra Hard Corps
Herzog Zwei (no instructions)
Shining in the Darkness
Phantasy Star II (also has map)
Darius II (mega drive)
Raiden Trad

Games (cart only unless noted):

Gunstar Heroes
TMNT Hyperstone Heist (with instructions)
Sonic Classics
Phantasy Star III (with instructions)
Phantasy Star III
Sonic Spinball
Thunder Force III
Tatsujin (mega drive)
Sonic & Knuckles

Sega 32X:

Add on System

Sega CD:

Sega CDX System (complete: System, Controller (not original one, off-brand), AC adapter, RF adapter, and 3 games: Sonic CD, Ecco the Dolphin, Sega Classics Arcade Collection and box, no instructions for system)

2 off brand controllers with instructions
Sega CD instructions
RF adapter

CD BackUp Ram Cart

Games (complete unless noted):

Mickey Mania
Heart of the Alien (no instructions)
Flashback (no box, sticker on cart)
Lords of Thunder
Keio Flying Squadron
Dark Wizards (no box)
Third World War