Your gaming blog will break at the worst time.
Not during a quiet week. Not while you are calmly fixing old screenshots. It will happen when a boss guide starts getting search clicks and you decide to update a plugin “real quick.”
Famous last words.
A local WordPress test site is not glamorous, but it is the difference between tinkering in private and turning your homepage into a white screen with ads still loading.

Guides punish messy updates
Game sites are fiddly.
You have tables, screenshots, affiliate boxes, embeds, sticky menus, cache plugins, and some theme setting you touched once in March and now fear like a cursed lever.
I saw a tiny patch-notes blog lose its sidebar after a theme update because one widget area changed names. The writer noticed only after a reader emailed, “bro your guide is sideways.”
That hurts.

Local first feels slow
It is still faster.
Build the change on your own machine, click through the guide, test the mobile view, then publish when the weird bits have already shown themselves.
And if you have never set that up, Learn With NKM has a clear walkthrough on how to install WordPress on localhost. That is the kind of dull skill that saves a loud headache later.
XP Haven has already said that game guide websites rot when nobody maintains them. Maintenance is not separate from the site. It is the site growing up.
So yes, local testing adds a step. It also keeps readers from seeing the step where you panic.
Do three ugly checks
Open the big guide.
Open a tag page. Open the post on your phone while standing near the router like a person bargaining with Wi-Fi.
Look for broken buttons, squeezed tables, vanished images, and that one heading that suddenly wraps like it lost a fight.
The live site is not a lab
Players do not care that your update nearly worked.
They want the route, the build, the drop rate, the setting, the map note, and maybe one joke that proves a human was there.
But they should not become unpaid testers for your theme experiments. Keep a local copy. Break that one first.