The Matter javascript for 2D collider.

The Matter.js is created with javascript and can be used like a 2D physics engine for the web development and game engine.
This javascript for web and mobile can be found on official website.
The development team tell us about the features of this tool:

• Rigid bodies
• Compound bodies
• Composite bodies
• Concave and convex hulls
• Physical properties (mass, area, density etc.)
• Restitution (elastic and inelastic collisions)
• Collisions (broad-phase, mid-phase and narrow-phase)
• Stable stacking and resting
• Conservation of momentum
• Friction and resistance
• Events
• Constraints
• Gravity
• Sleeping and static bodies
• Plugins
• Rounded corners (chamfering)
• Views (translate, zoom)
• Collision queries (raycasting, region tests)
• Time scaling (slow-mo, speed-up)
• Canvas renderer (supports vectors and textures)
• MatterTools for creating, testing and debugging worlds
• World state serialisation (requires resurrect.js)
• Cross-browser and Node.js support (Chrome, Firefox, Safari, IE8+)
• Mobile-compatible (touch, responsive)
• An original JavaScript physics implementation (not a port)

You can see one good example here.
How can be used ?
First, get a stable release and include the script in your web page and add the matter engine objects and features, see this example:

The online CoSpaces Maker for kids to code.

The team development tell us:
Imagine and create. Build a virtual world on any device with the CoSpaces Maker app and explore them in virtual reality. Design, develop and code your own creations or take inspiration from what others have built in the CoSpaces Maker gallery - all you need is a smartphone and a cardboard headset!

First you need to make an account.
The next step is to see all scenes and read how to deal with objects and features.
This features start from load objects, deal with objects, use camera, use scene and code.
To code you need to use blockly - the most simple way to code .

If you think this is to simple and the result will be unsatisfactory, then you'd better take a look here.
You can test online at CoSpaces - official website.

Unity 3D and the Puppet2D tool .

This tool can help you to animate sprites with Unity 3D.
You can create 2D skeletons, skin your characters to the bones, and create really easy to use controls that make animating 2D characters.
The tool come with this price $30.00 from this link.
First you need to create a 2D project into Unity 3D.
After you download this tool into your Unity 3D  then you can deal with this tool.
The main goal is to assemble sprites into a character and then create the desired animation.
Then the animation will be embedded in your project just like any animation.
See the next tutorial from official youtube channel of  Puppet2D tool:

The Santa Tracker website for kids.

This website will help with the education of the children and more so will prepare you for the winter holidays.
Start in this adventure by clicking on the icon with the upper left lines and you have access to Santa's surprises.

Another game engine: GameSalad .

About this game engine named GameSalad you must know:
  GameSalad is a drag-and-drop coding platform that makes teaching your students the fundamentals of computer science easy and fun! Students learn valuable logic and architecture skills as they progress in computer science achievement.
This game engine come with many features, like:

• publish to iPad , iPhone , Kindle , Nook , MacBook and many devices;
• you can tested free and also come with a custom plan built for you;
• just 4 day free trial;
• is simple to use it, less code;
• can be publish to web publish.gamesalad.com/gameproj/... ;
• The official gameSalad marketplace is gshelper.com ;

You can see video on youtube official channel:

Ultimate Epic Battle Simulator - to simulate your battles.

This software named Ultimate Epic Battle Simulator can simulate battles with different characters.
The development team tell us about this software:
Here is a sandbox like no other. Create massive battles with absolutely no limits. Want to see 10,000 chickens fight an army of Romans?? Sure, why not. Want to see a company of WW2 U.S soldiers fight 11,000 Medieval soldiers?? There are simply no limits to the carnage you can achieve in UEBS.

      SYSTEM REQUIREMENTS

• OS: Windows Vista Or Later
• Processor: Intel Core i5 4590, AMD FX 8320 or greater
• Memory: 8 GB RAM
• Graphics:  (DirectX 11) AMD Radeon HD 5770 1024MB | NVIDIA GTS 450 1024MB | Intel HD4000 @720P.
• DirectX: Version 11
• Storage:  5 GB available space
• You can download it from steam store.

The phaser.io - web game engine .

If you want to develop a online game then you can try Phaser from official website.
The development team tell us about this game engine: Phaser is free and open-source and always will be. To be better understood, the development team put a lot of examples of source code and online output on the official website. If don't want a github cloning, or setting up a local web server, you can run phaser in the cloud. You can test it with shaders, games created by developers. I did not find a YouTube channel, but the internet is full of tutorials for this javascript game engine.

The glTF - GL Transmission Format exporter for Blender 3D.

According to KhronosGroup this format:
glTF™ (GL Transmission Format) is a royalty-free specification for the efficient transmission and loading of 3D scenes and models by applications. glTF minimizes both the size of 3D assets, and the runtime processing needed to unpack and use those assets. glTF defines an extensible, common publishing format for 3D content tools and services that streamlines authoring workflows and enables interoperable use of content across the industry.

As you already know:
The Khronos Group, Inc. is an American non-profit member-funded industry consortium based in Beaverton, Oregon, focused on the creation of open standard, royalty-free application programming interfaces (APIs).
The glTF 1.0 specification has been announced since October 19, 2015 and it's in Draft since April 11, 2017.

Now you can test it with a Blender addon exporter from here.

The official exporter for Blender use glTF - version 2.0.

News: 0 A.D. Alpha 22 Venustas.

The game named 0 A.D. is free for Windows, Linux and Mac OS X.
If you area a developer then you can redistribute the game and modify it freely as long as you abide by the GPL or you can even use parts of the art and sound for your own projects as long as you abide by CC BY-SA.

 The new features from development team :

• Remake of many models, animations and textures, two new music tracks 
• Configuration-free Multiplayer Hosting 
• Capture the Relic Gamemode 
• Aura and Heal Range Visualization 
• Twelve new maps, including scripted enemies, rising water and a tutorial 
• Espionage Technology, Team Bonuses and Hero Auras 
• Petra AI Diplomacy and Attack Strategies 
• Summary Screen Graphs 
• Cinema Path Editing 
• Buddy System

The ShaderPlay Studios company.

About this company we can find out more on the official website:

ShaderPlay Studios is a software development company operating out of Playa Vista, California and founded on January of 2014 by Scott Bean, a veteran graphics engineer with 20 years of experience in the 3D software and gaming industry. The primary focus of ShaderPlay Studios is to give artists and engineers the tools they need to streamline their pipelines, iterate faster and ultimately create more meaningful digital content.
This development company come with tree software:

• NodeFlex is a very powerful, programmable node-based data generator designed to greatly simplify any tedious, redundant and error-prone data authoring tasks.
• ShaderFlex is a new breed of stand-alone code-based HLSL shader editors developed to take full advantage of DirectX 11/12.
• RenderFlex is a real-time viewer for ShaderFlex users to distribute and showcase their shader creations without giving away any of their proprietary source code or assets.

You can see more videos on the youtube official channel:

News: New Unity 2017 beta version release.

This new release is beta 2017.2.0b2 version release from Unity development team.
Is full with new features like:

• learn feature into started application;
• introducing Unity Package Manager;
• Services: Performance Reporting Service with support for native crashes on Android;
• Timeline support for Avatar Masks on Animation Tracks;
• Video with pixel aspect ratio support for non-square pixel;
• WebGL come with  linear rendering to WebGL 2.0;
• OSX: support for Retina in macOS standalone builds;
• 2D: with Tilemap;
• Editor: fix scripts editor, script compilation times and  splitting your project's scripts;
• Graphics: Implemented Display-P3 color gamut support  for iOS and macOS;
• VR: Updated Oculus to version 1.14;

...and more
 You can read one full page of changes and features from new Unity - here.

The Jocly platform for games.

This web platform for game named Jocly can be found here.
The name is similar with another game platform - Jolt.
The most games are classic board games known by gamers.
All games come into large collection of abstract strategy games, 2D and 3D user interface, artificial intelligence to play against.
You can also deal with Jocly library and set of tools to integrate boards games into Web environments.
Users can play against the computer or other jocly users - includes chat and video chat.
You can use jocly on your own sites by using jquery.jocly plugin.
So the games can be integrated into any web page with minimum effort.
See the next video from official youtube channel of Jocly :

News about NeoAxis Game Engine: The new version 1.11

The NeoAxis Engine come today with the version 1.11, read more on official website.
NeoAxis Group announces that NeoAxis Engine and its SDK was updated to version 1.11. NeoAxis Engine is an all-purpose 3D engine for games development, simulations and visualization systems creation. New version includes fixes for bugs that has been discovered since version 1.1, adds Parallax Occlusion Mapping technology and support for Autodesk 3dsMax Design 2011/2012 in Model Exporter.