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

entries/delta_engine.md

@@ -0,0 +1,13 @@
+# Delta Engine
+
+_Multi-platform Game Engine, C# OpenGL Version (custom wrapper) including the Editor._
+
+- Home: https://deltaengine.net/
+- State: mature, inactive since 2015
+- Download: https://deltaengine.net/download
+- Keywords: framework
+- Code repository: https://github.com/DeltaEngine/DeltaEngine.git (https://github.com/DeltaEngine)
+- Code language: C#
+- Code license: Apache-2.0
+
+## Building