Fumito Ueda's directed some of the best games of all time – Ico, Shadow of the Colossus, and The Last Guardian – but even he admits that memorable in-game moments can often sprout out from unintended or even "clunky" ideas.
All three of Ueda's classics are more or less about controlling a little guy in a huge world. Sometimes that scale comes across in the towering architecture of Ico, sometimes it manifests in the absolutely gigantic beasts you'll need to climb and stab in Shadow of the Colossus, and sometimes it's both, as is the case with The Last Guardian.