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

entries/balder2d.md

@@ -0,0 +1,19 @@
+# Balder2D
+
+_Multiplayer shooter in Zero Gravity._
+
+- Home: http://balder.sourceforge.net/, https://sourceforge.net/projects/balder/
+- State: beta, inactive since 2009
+- Download: https://sourceforge.net/projects/balder/files/
+- Platform: Linux
+- Keywords: strategy, open content
+- Code repository: https://svn.code.sf.net/p/balder/code/ (svn)
+- Code language: C++
+- Code license: GPL-2.0
+- Assets license: GPL
+
+Developer: Bjørn Hansen, Reuben Lord
+
+## Building
+
+- Build system: Scons