Since a universal code doesn't exist, you must craft your own. This is easier than it sounds. This is for the standard HTML5 browser version.

Idle Breakout is addictive, but the scaling costs of high-tier balls like the Poison or Plasma ball can feel like hitting a brick wall. Whether you want to test out maxed-out builds or just see how far the levels go, using an import code is the fastest way to get there.

// Set the gold value to a very large number (effectively infinite) localStorage.setItem(goldKey, "Infinity");

Some versions allow you to "prestige" (reset blocks for permanent global multipliers). Repeatedly prestige early for small multipliers until the multiplier is so high that a single brick gives 1M+ gold. This is the intended "infinite" loop.