We recently removed the space for Rectangle ads from the Games page and Game Search page. You will no longer see user advertisements or external advertisements on the page as a result. You will still see sponsored games within the sorts, and user ads are still shown on Home page, Game Details page, Catalog, and other places within Roblox.
We want to provide the best player experience, including standardizing how Roblox works across all platforms. Removing advertisements from the Games page and Game Search page unify the web experience with tablets and other platforms. Over the long term, we aim to focus on offering features that work across platforms such as sponsoring games, rather than things that only apply to one platform like web ads.