- Naughty Dog is at 798
- Insomniac is 522
- Bungie is getting huge with 1,545 employees
- Guerrilla has 418 employees
- Santa Monica needs to scale up only 342
- Firesprite has 237 employees
- Sucker Punch with 185 could also grow a bit I feel
- Firewalk has 133 employees
- Haven also has 133 employees
- Bend Studio 118 employees
- London Studio 103 employees
- Media Molecule has 100 employees
- Bluepoint has 74 people
- Housemarque surprisingly growing fast with 104 employees
- Polyphony has 74
- Team Asobi has 11 with these two I'm not sure if LinkedIn is much used in Japan though
- Savage Game Studios is 30 employees
- Nixxes is 72 employees
- Valkyrie is 43 employees
- San Diego Studios hasnt got a LinkedIn page for some reason
- PixelOpus only has 1 employee? Maybe it's new page looks like the employees there link their profile to Playstation same as San Diego
- Deviation (not bought yet) is at 131 employees
For interest if we look at Xbox
- Mojang 965 employees
- Zenimax Online 527 employees
- Bethesda Game Studios 446 employees
- Bethesda Softworks 1,112 employees
- 343 has 422 employees
- Playground Games has 375 employees
- id Software has 293 employees
- Rare has 289 employees
- Arkane 265 employees
- Obsidian has 263 employees
- Turn 10 203 employees
- Coalition has 182 employees
- Machine Games 150 employees
- Ninja Theory 137 employees
- Undead Labs 135 employees
- inXile 119 employees
- Compulsion Games 82 employees
- Double fine 79 employees
- The Initiative has 49 employees
- Alpha Dog 22 employees
- Worlds Edge 11 employees
- TangoGameworks 13 employees - same as Sony Japanese company LinkedIn presence
With Activision
- Blizzard 5,808 employees
- King 3,163 employees
- Infinity Ward 658 employees
- Sledgehammer Games 563 employees
- Treyarch 592 employees
- Beenox 492 employees
- Raven Software 364 employees
- High Moon Studios 260 employees
- Toys for Bob 146 employees
- Digital Legends 103 employees
At a glance it looks like MS is really bloated in places. Like how Undead Labs has 135 employees yet you compare their products to Sony Bend and it's night and day.
Sony could also use some beefing up in places but Naughty Dog and Insomniac are some of the biggest on any of the lists. They are definitely 2+ game studios at their size now and SSM are close. Sucker Punch and Bend feel a bit under resourced for the scale of games they are on now. Surprisingly the newer purchases like Haven, Firesprite and Firewalk are quite hefty so my expectation for what they are working on is going up
Surprising to me how huge the mobile devs are