This is DOOM running on an ESP32 WROVER DevKitC.  
https://www.mouser.ch/ProductDetail/356-ESP32-DEVKITC-VB

WAD files are stored on an SD Card.
https://www.aliexpress.com/item/GREATZT-1Pcs-Micro-SD-Storage-Expansion-Board-Mini-Micro-SD-TF-Card-Memory-Shield-Module-With/32865801075.html

You can get DOOM here:
https://store.steampowered.com/app/2280/Ultimate_Doom/

Sound is using the I2S DAC output (8-bit), a 3W amplifier and tiny 0.7W speaker.
https://www.aliexpress.com/item/10pcs-lot-3V-5V-Supply-Voltage-3W-Audio-Player-Power-Amplifier-Module-Board-PCB-mono-Mini/32750718067.html
https://www.mouser.ch/ProductDetail/665-AS01608MSSC16WPR

Here are the breadboard friendly buttons:
https://www.mouser.ch/ProductDetail/688-SKRGAFD010

And the modified source code:
https://github.com/jkirsons/doom-espidf
(credits: Espressif, prBoom, id)

Schematic:
https://drive.google.com/file/d/1Blsr6tle2YdGhFHDwvqY-jP0K5PJvhB1/view