pixeltris on github, a search for pixeltris should get you there first result. Everything you need is on that page, including how to instal the script to ublock, im using the vid swap script and TTLOL pro. It's not perfect but the ads are gone.
Twitch couldn't beat my adblocking, it just taught me how to find and use custom scripts. Shoot your shot YT, I haven't installed a script for your website yet but now Im gonna have too. Congrats the number of ads im gonna see from you is about to go down.