Responsive Design is a design approach, where the UI changes depending on the users device and screen size
Terminology
Screen Size
Resolution
Viewports
Adobe Edge Reflow
Easel
Froont
ResponsiveiIs
Grid Systems
Dreamweaver
Dabblet
Mozilla Thimble
Codemirror
Code anywhere
Bootstrap
Foundation
Gumby
Html5 boiler plate
Skeleton
HTML kickstart
Wirefy
Bootstrap PSDs
Jetstrap
Responsive wire frames
Style Tiles
Matt kersleys responsive design testing tool
Studiopress
Protofluid
Responsinator
Chrome plugins
Responsive website tester
Dimensions
VNC Viewer
Responsive inspector
Tools
http://responsivedesignchecker.com/checker.php?url=xgamedev.com&width=1400&height=700
References
https://mediag.com/news/popular-screen-resolutions-designing-for-all/
https://www.w3schools.com/css/css_rwd_viewport.asp
http://bradfrost.com/blog/post/7-habits-of-highly-effective-media-queries/
https://www.sitepoint.com/common-techniques-in-responsive-web-design/
https://www.w3schools.com/browsers/browsers_display.asp
https://www.frispgames.com/best-practices-for-handling-different-aspect-ratios-and-screen-resolutions-in-unity-2D-for-mobile-games/
http://v-play.net/doc/vplay-different-screen-sizes/
http://www.third-helix.com/2012/02/05/making-2d-games-with-unity.html
http://www.reddit.com/r/Unity3D/comments/1sp864/handlingiosandroidanddesktopaspectratios/
http://www.reddit.com/r/Unity2D/comments/2qii4h/bestpracticesforcreatingartassetson/
http://forum.unity3d.com/threads/working-multi-resolution-sprite-sheets.274683/
https://www.youtube.com/watch?v=rMCLWt1DuqI
https://unity3d.com/learn/tutorials/topics/scripting/assetbundles-and-assetbundle-manager
https://www.electricmayhemsolutions.net/screen-resolution-vs-viewport-responsive-web-design/
https://www.quora.com/What-are-logical-pixels
https://stackoverflow.com/questions/31709417/css-resolution-calculations
https://ariya.io/2011/08/mobile-web-logical-pixel-vs-physical-pixel
https://hortfrancisblog.wordpress.com/tag/logical-resolution/
https://www.paintcodeapp.com/news/ultimate-guide-to-iphone-resolutions
https://blogs.perficientdigital.com/2014/12/24/css-pixel-ratio-or-how-big-is-my-phone/