So this is my main gaming room:

use cases:

• PC gaming at the desk (mouse & keyboard or gamepad, 42'' monitor)
• PC gaming on the sofa (gamepad, big TV or pull-down projector screen)
• PCVR gaming
• PS5 + PS4 gaming on the sofa
• PSVR2 gaming
• Xbox Series + One gaming on the sofa
• backwards compatible Xbox 360 + Xbox Original games (especially enhanced/boosted games)
• Switch gaming on the sofa (docking station is hidden behind the TV)
• UHD movies (on TV, the projector can't handle 4K)
• Blu-ray 2D movies
• Streamed movies and TV shows

And this is my retro gaming room / mediathek:

use cases:

• PS3 gaming on the 3D-TV
• backwards compatible PS2 and PS1 games
• XBox One gaming (a bit redundant)
• Xbox 360 gaming on the 3D-TV (especially games without backward compatibility)
• Xbox 360 Kinect gaming
• music games like Guitar Hero, Rock Band, Sing Star
• Wii U + Wii gaming on the 3D-TV
• GameCube gaming on the CRT
• Xbox Original gaming on the CRT
• PlayStation 1 gaming on the CRT
• Blu-ray 3D movies on the 3D-TV (played on Xbox One X)
• HD-DVD movies on the 3D-TV (played on Xbox 360)
• DVD movies on the 3D-TV (played on Xbox One X)

I'll have to take a pic later, but basically 55 inch 120 hz OLED TV. PC, ps5 and switch OLED. I gave up old systems and went with emulation. I use eARC so sonos arc surround system. Quite happy with the setup.

I dig your setup.  Mainly eying your movie collection, we share many of the same tastes.  But not Alf, that won't ever be on my shelf, lol. 

My latest additions that will be in soon.  I'm in the process of rearranging, and rebuilding my audio setup in the theatre room.  Once I'm done and reorganized I will snap some pictures and update here.  Too much going on at the moment, so it will likely be a couple of months. 

Edit: My theatre room is my everything room: Gaming, movie media, music media, adding in a DJ practice corner with other beat making equipment and a separate music media section complete with a separate stereo sound setup to mix into video games like Space Simulators to get a sense that I'm I rocking it in my spaceship whilst still being able to hear all my in-game audio.

Alf is hilarious! TV comedy classic!

Here is a link to my DVD/HD-DVD/Blu-ray/3D-Blu-ray/UHD collection:
http://www.invelos.com/dvdcollection.aspx/Cohen

Most of my movies are from the 1990s and 2000s, the last decade I collected much less, the streaming quality was good enough for most movies and TV shows.

But I'm planning a small home theater (~20 square meters / ~200 sq ft) myself with a new projector, which supports both 4K and 3D... then I'll probably collect more UHDs and 3D-Blu-rays again.

The room is already empty, but I have to clean it up first (removing as much nicotine residue as possible, new wallpapers, painting the ceiling, polishing the floor...):

Consoles, peripherals, and networking under the TV. PC also hooked up to it for when I wanna play or watch from the couch.

My gaming room as of today (Work in progress, need to clean it up - rearrange wires, etc - been busy with all that has been happening)

Also with what I have....

-Sony 85" Class - X90CL Series - 4K UHD LED LCD TV
-Nakamichi - 7.2.4-Channel 800W Soundbar System with Dual 8" Wireless Subwoofers and Dolby Atmos 
-HP - 27" IPS LED FHD FreeSync Monitor
-Playstation 5
-Playstation 4 (Hidden below Xbox Series X)
-Playstation 3 (Hidden below Playstation 5)
-Nintendo Switch
-Nintendo Switch OLED
-Xbox Series X
-Xbox Series S
-Gaming Desktop (from 2019)
-Playstation Portable - PSP (hidden below Playstation 5)
-Nintendo 3DS (hidden below Playstation 5)
-Nintendo DS (hidden below Playstation 5)
-Controller Stand with 3 Dualsense (White, Black and Cosmic Purple), 2 Nintendo Switch Pro Controllers, 3 Xbox Series controllers (Black, White and Lunar Shift), and 2 Dualshock 4 controllers (Navy Blue and Red)
-Razer BlackWidow V3 Pro Mechanical Wireless Gaming Keyboard
-Razer Basilisk Ultimate Wireless Gaming Mouse
-Theater Sofa Set
-The Legend of Zelda Breath of the Wild Wall Poster
-Super Mario Odyssey Wall Poster
-Master Sword and Hylian Shield replica model

Full View

Front view

Back View

Behind Theater Sofa Set - Two Subwoofers from Sound system

Playstation 5, Switch with its Dock and OLED Switch Dock

Xbox Series X and Xbox Series S

Gaming Desktop plus controller stand

Side Monitor

Controller stand

PS4 hidden below Xbox Series X

PS3, 3DS, PSP, and DS hidden below PS5

Gaming Mouse and Keyboard

Very nice. Where do you get these theater sofa seats? They look quite comfortable!

Looking at the door behind the seats I'm more curious which all Hobbits he is friends with, looks like they have their own door.

I got it from a local furniture store...the price is a bit high but quality is great, have had it since 2018 when I first bought my house.

LOL

Those are attic doors which lead to a small storage room - I have 4 of them , 2 are in the media room and one in each of the bedrooms upstairs.

Nice controller stack.