Indexed 1 Article And Not The Rest?

I have this one website where I have posted just one article that's in the gaming niche from September 2016. I decided 2 days ago to start posting more gaming articles on it. I took my whole night writing up each post for each different game.

The article's are somewhat similar (talking about similar stuff) however I try my best to have unique or different content for each post.

So the first post I wrote up 2 nights ago got indexed and is ranking for all of my keywords (even passed high authority domains as well). However, the rest are not indexed at all. I am kind of concerned as to why. I checked site:mydomain.com and I just see my 2 article's indexed but that's it. I have like 5-10 new ones that have not been indexed yet.

Any idea or thought as to why they're not indexed? I have never did any backlinking or anything on this site before.

AceCanoe

Edit:

The article that was just indexed is not indexed anymore! I am so confused! Now the only article that is indexed is the one from September 2016. Any idea what could be happening? Does it just take time for Google to index all of them? Or I'm thinking is some have related/similar content, that's why it's not being indexed? Each post has 300-500 words though.

I'm really confuesed why Google indexed the one post I published 2 days ago then just deindexed it like a couple minutes ago? I'd appreciate any advice!

Hi there,

It happens with a new site or site with less domain authority.
As you told, you posted 1 article on Sept 2016 and then no update was done on the site.

And then recently you have posted few articles.

Don't worry. they will get indexed within 7-10 days.

Get some backlinks for your site. This will your site get more crawls from Google and your articles will be indexed faster.

give it some time ... do some good interlinking in the page and you can add a sitemap as well.

just wait and keep adding more content and backlinks, you wont regret it

You just recently updated your site, just wait a little longer. Keep adding more posts to your website and make sure it is always updated.

Its normal, check again after 2 weeks.