Quantity   Component name
1 × Raspberry Pi 3 Model B
1 × Raspberry Pi 3 Power Supply - 5.1v 2.5A I bought the official Raspberry Pi 3 power supply. Tested some of the third party power supply, and even using high quality cables, it wiould still result in under voltage.
1 × 8" 1024x768 IPS HE080IA-01D LCD Display https://www.aliexpress.com/item/HDMI-VGA-AV-Control-Driver-Board-8-inch-HE080IA-01D-1024-768-IPS-high-definition-LCD/32325920866.html?spm=2114.13010608.0.0.SzvaUj
1 × Arcade Joystick + Buttons Kit https://www.aliexpress.com/item/DIY-arcade-joystick-handle-set-kits-5-pin-24mm-30mm-push-buttons-spare-parts-USB-cable/32770679289.html?spm=2114.13010308.0.0.nqSdOB
2 × 40mm 4ohm 3W speaker https://www.aliexpress.com/item/2pcs-Packs-4Ohm-3W-Full-range-Audio-Stereo-Speaker-40mm-Loudspeakers-Woofer-Speaker/32782192396.html?spm=2114.13010608.0.0.nlJkfT
1 × PAM8403 5V digital amplifier board https://www.aliexpress.com/item/PAM8403-5V-Power-Audio-Amplifier-Board-2-Channel-3W-W-Volume-Control-Free-Shipping/32452488898.html?spm=2114.13010608.0.0.nlJkfT
1 × Short 20cm HDMI Male to Male cable https://www.aliexpress.com/item/High-Speed-HDMI-Cable-Full-HD-Short-HDMI-Male-to-Male-Plug-Flat-Cable-Cord-Widely/32772823742.html?spm=2114.13010608.0.0.SzvaUj
1 × Short 30cm USB 2.0 male to female extension cable https://www.aliexpress.com/item/30CM-USB-2-0-A-Male-to-USB2-0-A-Female-Extension-Molded-Panel-Mount-Extention/32573641881.html?spm=2114.13010608.0.0.nlJkfT
1 × Heat Sinks for Raspberry Pi 3 https://www.aliexpress.com/item/Free-shipping-5pcs-lot-heat-sink-for-A4988-A4983-Stepper-Driver/1833231480.html?spm=2114.13010608.0.0.SzvaUj
6 × White LEDs
6 × 100ohm resistors
1 × 128GB SD Card You can use a smaller card, but a bigger card allows you to dump in a lot more games.
1 × A4 Sized 0.5mm Thick Clear PVC Sheet This is used for the marquee - cut to size: 210mm x 45mm