Listed here are all DOS titles that have a dedicated help page here at DOS Days, that start with a  letter from M to S.
            
              
                |  Maniac Mansion
 (Lucasfilm Games, 1988)
 |   Maniac Mansion: Day of the Tentacle
 (LucasArts, 1993)
 |   MDK
 (Interplay, 1997)
 | 
              
                |   Midwinter
 (MicroProse, 1990)
 |  Monkey Island, The Secret of
 (Lucasfilm Games, 1990)
 |  Monkey Island 2: Lechuck's Revenge
 (Lucasfilm Games, 1991)
 | 
              
                |  Monkey Island 3: The Curse of
 (Lucasfilm Games, 1993)
 |   NASCAR Racing
 (Papyrus Design,  1994)
 |   PGA Tour Golf
 (Electronic Arts, 1990)
 | 
              
              |  Pirates! [Sid Meier's]
 (MicroProse, 1987)
 |  Police Quest: In Pursuit of the Death Angel
 (Sierra On-Line, 1987)
 |   Police Quest 2: The Vengeance
 (Sierra On-Line, 1988)
 | 
              
                |   Police Quest 3: The Kindred
 (Sierra On-Line, 1991)
 |   Prince of Persia
 (Brøderbund Software, 1990)
 |  Quake
 (id Software, 
                  1996)
 | 
              
                |   Railroad Tycoon, Sid Meier's
 (MicroProse, 1990)
 |   Red Baron
 (Dynamix, 1990)
 |   Rollercoaster Tycoon
 (MicroProse, 1999)*
 | 
              
              |  Sam & Max: Hit the Road
 (LucasArts, 1993)
 |   Screamer
 (Virgin Interactive Entertainment, 1995)
 |   Screamer 2
 (Virgin Interactive Entertainment, 1996)
 | 
              
              |  Secret of Monkey Island, The
 (Lucasfilm Games, 1990)
 |   Secret Weapons of the Luftwaffe
 (LucasFilm Games, 1991)
 |   Simon the Sorcerer
 (Adventure Soft, 1993)
 | 
              |  Sims, The
 (Maxis/Electronic Arts,  2000)*
 |   Space Quest: The Sarien Encounter
 (Sierra On-Line, 1986)
 |   Space Quest I: Roger Wilco in the Sarien Encounter
 (Sierra On-Line, 1991)
 | 
              
               |  Space Quest II: Vohaul's Revenge
 (Sierra On-Line, 1987)
 |   Space Quest III: The Pirates of Pestulon
 (Sierra On-Line, 1989)
 |   Space Quest IV: Roger Wilco and the Time Rippers
 (Sierra On-Line, 1991)
 | 
              
                |  Space Quest V: The Next Mutation
 (Sierra On-Line, 1993)
 |   Space Quest VI: Roger Wilco in the Spinal Frontier
 (Sierra On-Line, 1995)*
 |  Star Wars: TIE Fighter
 (LucasArts, 1994)
 | 
              
                |  Star Wars: X-Wing
 (LucasArts, 1993)
 |   Stunts
 (Brøderbund Software)
 |   Syndicate
 (Bullfrog, 1993)
 | 
                |   System Shock
 (Origin Systems, 1994)
 | 
                 System Shock 2
 (Electronic Arts, 1999)
 |