Coin-Op City is an app for your Windows PC. It runs your machines right there, and OBS shows them through a link, like any other browser source. Your chat connects straight from your PC, and your viewers' coins, careers and your settings stay on it.
One machine or all of them, on the pricing page. Add a card to start your 14-day free trial: you aren't charged until it ends. Your license key arrives by email.
Run the installer, open Coin-Op City and type your license key. One key covers every machine you buy.
Twitch and YouTube with one button and a short code, Kick by its channel name, and StreamElements tips with your token.
Copy each layout's link into a Browser source and drag it into place. The app's setup guide walks you through it, and sends a test coin when you're done.
Coin-Op City isn't code-signed yet, so Windows doesn't recognise it the first time. Only download it from coinopcity.com. Then:
One machine for $12 a month, or every machine for $29. 14 days free.