Star Trek Online Age of Discovery by Arc Games.

This is the best free online play of an MMORPG game.
If you play the old games like Freelancer or Librelancer then this game is more advanced and with many goals.

The development team comes with this intro:
  Explore strange new worlds, seek out new life and new civilizations, and boldly go in this expanding vast universe.

What I liked is the gradual ship-to-staff development system.
The story is beautiful, but sometimes it can happen to get the story back.
However, these small impediments do not take them out of the beauty of the game.
It is a game with many video scenes and nicely arranged spaces that will surprise you.
I was amazed at how much information I was able to put into this game, making it huge and non-monotonous.
I try to find a good video for this article but I don't find it on the official youtube channel.
Anyway, I select this to have a simple into:

News : Cesium World Terrain update the United States Terrain up to 0.5m .

Fresh high-resolution terrain across the United States was added to Cesium World Terrain. 

New 3m terrain now covers large sections of the United States, including major cities such as San Francisco, Washington DC, Portland, Seattle, Salt Lake City, Philadelphia, Raleigh, and New Orleans, to name just a few.

The quarry near San Francisco shown below highlights how the new high-resolution terrain (left) brings the hills, roads, and steps into focus. Try the slider to see how the new terrain also better matches the high-resolution imagery. 

New 0.5m terrain now covers the entire West Coast of the US, from the Mexico border all the way up to the Canada border. 

This coastal shot shows the old terrain (right); the rugged nature of the coast becomes clear with new high resolution terrain (left).

Read more at official blog.

News : Blender 3D the beta version.

In this video, Pablo Vazquez presents the 5 major updates in Blender 2.8 Beta.
As you already know, the Blender 3D is free and you can support core Blender development here.

Use offline Slate editor.

Named Slate this software is a simple editor.
This editor can be easily used to create drawings and simple art like pixelart.
The good part of this editor is simple to use and can be used offline.
This is a screenshot of this software:

More about this editor can be found at GitHub website page.

Make online sprite with pixilart.

This is a simple drawing tool with simple features like an editor with some basic features.
This tool comes with a community art online.
This online tool comes with an application on google play.
Create pixel art on the go. Pixilart is a community of passionate art enthusiasts who enjoy pixels. Easily make pixel art, and then share your art and even follow others who have created their own pixel art creations.
You can test your 2D drawing skills here.

Unity 3D : Unity 2D Challenge.

Here's an unexpected opportunity for Unity 3D game developers to develop 2D games.
About this challenge the Unity team come with this info:
The prizes:
1st - $2000
2nd - $1000
3rd - $500
Special Mention - $500
Join the Unity 2D Challenge to become part of an exciting community journey exploring the possibilities of our new 2D tools.
How to participate 
Create a small piece of content using Unity’s 2D tools. It can be anything from pixel-perfect retro-style art to a snippet of hand-drawn platforming gameplay or a thin vertical slice of a 2D competitive brawler. Anything goes, as long as it’s 2D. See the FAQ at the bottom for more info.
See this video intro: