renamed games folder to entries folder (also contained frameworks, libraries, ...) and added to the backlog

entries/d2x-xl.md

@@ -0,0 +1,16 @@
+# D2X-XL
+
+_Remake of Descent, Descent II._
+
+- Home: http://www.descent2.de/, https://sourceforge.net/projects/d2x-xl/
+- State: mature, inactive since 2015
+- Download: (see home)
+- Platform: Windows, Linux, macOS
+- Keywords: remake, inspired by Descent + Descent II, non-free content, shooter
+- Code repository: https://svn.code.sf.net/p/d2x-xl/code/trunk (svn)
+- Code language: C++
+- Code license: Custom (see http://svn.code.sf.net/p/d2x-xl/code/trunk/LICENSE), GPL-2.0
+
+See also the Descent level editor.
+
+## Building