https://gbkgames.org/jsload/adslots.js

1/* Requests an ad for every static (already-in-the-HTML) AdSense unit
2   on the page — the left/right fixed-size slots. The strip's
3   dynamically-inserted 728x90 banner pushes itself separately inside
4   sidebargames.js, right after it's added to the DOM, since it
5   doesn't exist yet when this runs. */
6document.addEventListener('DOMContentLoaded', function() {
7    document.querySelectorAll('.ad-slot-frame ins.adsbygoogle').forEach(function() {
8        try {
9            (window.adsbygoogle = window.adsbygoogle || []).push({});
10        } catch (e) {}
11    });
12});