Metroid (NES, 1986)
Space Hunter (NES, 1986)
The Sacred Armour of Antiriad/Rad Warrior (C64 etc, 1986)

Milon's Secret Castle (NES, 1986)
Arac/Spiderbot (C64/AII/PC DOS, 1986)
Romancia/Dragon Slayer Jr. (PC-88 & 98/MSX, 1986/NES, 1987)

Cross Blaim (MSX, 1986)

 

Cauldron II/Cauldron 2: The Pumpkin Strikes Back (C64, 1986) - Proto/Semi
​Fist II: The Legend Continues (C64 etc, 1986) 
Bouken Roman (MSX, 1986)
Vampire Killer (MSX, 1986) - Proto-PA
Dan Dare (C64 etc, 1986)
Kid Icarus (NES, 1986) - Proto-Platform Adventure 
Alex Kidd in Miracle World (SMS, 1986) - Proto-PA
Thunderstruck (BBC Micro, 1986) 
Youkai Yashiki (Ghost House) (MSX, 1986) 
Relics (PC-88 etc., 1986)? 
Takeshi's Challenge (NES, 1986)
Super Tritorn (MSX)?
​Knight Tyme (PCs, 1986)?
Saboteur (C64 etc, 1986)

Sir Fred (PCs, 1986)

Outliers: 
Super Pitfall (PC-88 version)

Mind Walker (AMI) 
Livingstone, I Presume?/Livingstone Supongo (C64/ST/PC, 1986/Multi, 1987) 
Xain'd Sleena/Solar warrior (ARC, 1986) 
WiBArM (PC-88, 1986/PC DOS, 1989) 
King's Quest III (PC, 1986) 
Contact Sam Cruise (Spectrum, 1986)?
Woody Poco/Woody Poko (PC-88/PC-98, 1986/FM-7/NES/MSX, 1987)
Ganbare Goemon: Karakuri Douchuu (NES, 1986/MSX, 1987)

​Heartland (PCs, 1986)?
​Madoola no Tsubasa: Wing of Madoola (NES, 1986)
Conquestador/Las Tres Luces de Glaurung (Multi, 1986)
Rasputin (C64/Spectrum/Amstrad, 1986)