What company do you think routinely makes great games? Mine has to be Telltale, because of their Borderlands games.
I think i may know more games from them, but i'm sure as hell they created The Witcher series. As for my favorite publishers i think it's Square Enix, they have some outstanding creations.
I have to say obsidian entertainment as I love their games mainly their crg's pillars of eternity and tyranny.
Bethesda (mostly because of The Elder Scrolls and Fallout serial). CD Projekt Red (Witcher, and that upcomming Cyberpunk 2077 looks promising)
Blizzard Entertainment I grew up playing Diablo and Warcraft III as my first PC games. Now, I'm currently playing World of Warcraft and Heroes of the Storm on my free time. Namco and Capcom are also some of my favorite companies since enjoy playing Street Fighter, Tekken, and SoulCalibur.
Square enix make really nice games, but I would say Blizzard. They haven't made many games, but every single one of them has been an absolute success and has marked multiplayer games and esports Ubisoft too, especially Assassin's creed, these games are absolutely amazing
To an extent, Valve. My profile talks about my love for Team Fortress 2, but I'm genuinely a fan of their other games. For a company that still makes games (and not a garbage card game idea), I would say Nintendo. I grew up with Mario and Legend of Zelda. These game series are just perfect.
It depends to the platform i use. PC : Blizzard (almost every game) Sony : Square Enix (FF and DQ) Nintendo : Itself (mario and Zelda)