I assumed I would boot up the app and there would be a big red button saying GAMES … but no. I have to sign up to PREMIUM. Then find the YOUR PREMIUM BENEFITS section. Then find EXPERIMENTAL FEATURES and select TRY EXPERIMENTAL FEATURES. Then find the TRY GAMES ON YOUTUBE part therein and tap on TRY IT OUT.
Just use an ad blocker then, I haven’t seen an ad on YouTube in years. If they charged a reasonable amount for their ad-free experience (say, about what they earn from ads, so like $1-2/month), I’d pay. But $14/month is way too much, and I’d rather just not use YouTube than pay that.