Average YS mark for Mastertronic games is 63.92%.
This ranks the label at No. 79 of 105.
Number of Mastertronic games reviewed by YS: 118.
Number of Megagames: 10 (8.47% of their games).

Full YS softography

One Man And His Droid	YS1	6
Quest For The Holy Grail	YS1	UNR
Caves Of Doom	YS2	8
Rockman	YS2	8
Soul Of A Robot	YS2	6
Spellbound	YS2	8
1985 The Day After	YS3	7
Space Hunter	YS5	8
The Devil's Crown	YS5	8
The Incredible Shrinking Fireman	YS5	7
Sinbad And The Golden Ship	YS6	7
A Ticket To Ride	YS7	5
Knight Tyme	YS7	9	MG
Knight Tyme	YS8	9	MG
Master Of Magic	YS9	8
Molecule Man	YS9	6
Subculture	YS9	8
Con-Quest	YS10	8
Kentilla	YS10	6
Lap Of The Gods	YS10	7
Spellbound	YS10	9	MG
Formula One Simulator	YS11	7
Kane	YS11	3
Universal Hero	YS11	5
Video Olympics	YS11	3
Double Volleyball	YS12	4
Storm	YS12	4
Video Poker	YS12	4
180	YS13	9	MG
Speed King 2	YS14	7
Terminus	YS14	7
Zub	YS14	7
Agent X	YS15	7
Hyperbowl	YS15	7
Ninja	YS15	5
Colony	YS16	4
How To Be A Hero	YS17	6
Rasterscan	YS18	8
SOS	YS18	7
Amaurote	YS19	9	MG
Chronos	YS19	8
Kobyashi Naru	YS19	7
Stormbringer	YS19	9	MG
Strike	YS19	7
Ball Crazy	YS20	5
Flash Gordon	YS20	7
Milk Race	YS20	6
Voidrunner	YS20	8
Plexar	YS23	7
Angleball	YS24	8
Motos	YS24	7
Agent X II	YS25	6
Bosconian	YS25	5
Lazerwheel	YS25	4
Level 5	YS25	4
Omega One	YS25	5
Rescue	YS25	7
Rigel's Revenge	YS25	8
Rentakill Rita	YS26	8
Ultimate Combat Mission	YS26	7
Venom	YS27	4
Dynatron Mission	YS28	5
Kikstart	YS28	7
Los Angeles SWAT	YS28	2
Rollaround	YS28	6
Cage Match	YS29	4
Energy Warrior	YS29	5
Grand Prix Tennis	YS29	4
Pod	YS29	3
Rockford	YS29	8
The Quest For The Golden Eggcup	YS29	8
Prowler	YS31	4
On Cue	YS32	4
Starwars Droids	YS32	3
Flunky	YS34	6
Vectorball	YS34	7
Plus 3 Adventures	YS35	6
Pulse Warrior	YS36	5
Quest For The Golden Eggcup	YS36	4
Motorbike Madness	YS38	8
Star Farce	YS39	8
Camelot Warriors	YS40	4
Reveal	YS40	7
The Sacred Armour Of Antiriad	YS40	8
Werewolves Of London	YS40	3
Tetris	YS43	96	MG
Supernudge	YS44	71
Canyon Warrior	YS46	66
Mindtrap	YS46	83
Planet 10	YS46	72
Panther	YS47	50
Protector	YS47	57
Rescue On Fractalus	YS47	57
Fist II	YS50	63
Gregory Loses His Clock	YS50	93	MG
Jonah Barrington's Squash	YS50	84
Speedboat Assassins	YS50	69
Street Hassle	YS51	62
Sailing	YS52	63
F-16 Fighting Falcon	YS53	69
Fighting Warrior	YS53	39
Psycho Hopper	YS53	46
Enterprise	YS54	58
Pinball Power	YS54	79
Raster-Runner	YS54	72
Micro Mouse	YS55	31
Rad Ramp Racer	YS56	73
Super Stock Car	YS58	69
T-Bird	YS59	74
Yes Prime Minister	YS59	75
Double Dragon	YS62	70
Gemini Wing	YS62	52
Silkworm	YS62	93	MG
Xenon	YS62	92	MG
Continental Circus	YS65	62
Double Dragon II	YS70	38
Ninja Warriors	YS70	65
Shinobi	YS70	73
Mindtrap	YS87	56

MG = YS Megagame Rating

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