In my opinion: 1. Nintendo (Mario 3, Mario World, Link to the Past, Mario Kart) 2. Capcom (Street Fighter 2, Mega Man) 3. Konami (Contra, Castlevania) 4. Rare (Donkey Kong Country, Battletoads) 5. Sega (Sonic)

1. Square Soft/Enix
2. Koonami
3. Nintendo
4. Sony
5. Capcom

Square and Enix didn't merge until '03, so it doesn't really make sense to list them together from '86 to '95.

Mine would probably be Nintendo, Sega, Capcom, Square, Konami.

Nintendo
Lucasfilm Games/LucasArts
Origin Systems
MicroProse
id Software

1) Microprose (Civilization, XCom, Master of Orion) ZOMG
......
......
The others are about the same. But I probably forgot some company I can't remember.

2) Konami
3) LucasArts
4) Nintendo
5) Origin Systems

Sega and Nintendo, obviously

Rare, LucasArts, Nintendo.

1. Nintendo
2. Sega
3. Square
4. Capcom
5. Working Designs

Nintendo, Sega, Capcom, Square, Konami, assuming that we're talking about amount of quality software.

Probably not best overall, but best for my taste in those times:

Sierra Entertainment, LucasArts, Cinemaware, Microprose, SSI