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

entries/3dcity.md

@@ -0,0 +1,16 @@
+# 3d.city
+
+_WebGL version of micropolisJS._
+
+- Home: http://lo-th.github.io/3d.city/index.html, https://github.com/lo-th/3d.city
+- State: mature, inactive since 2016
+- Play: http://lo-th.github.io/3d.city/index.html
+- Keywords: simulation, clone, inspired by Simcity, open content
+- Code repository: https://github.com/lo-th/3d.city.git
+- Code language: JavaScript
+- Code license: GPL-3.0 (with additional terms)
+- Code dependencies: SEA3D, Three.js
+
+## Building
+
+- Build system: Custom (Python script)