moved the entries up one folder, added the folder to the keywords

games/open_city.md

@@ -0,0 +1,18 @@
+# OpenCity
+
+_Another 3D city simulator._
+
+- Home: http://www.opencity.info/, https://sourceforge.net/projects/opencity/
+- Media: https://en.wikipedia.org/wiki/OpenCity
+- State: beta
+- Download: http://www.opencity.info/en/Download.html
+- Keywords: simulation
+- Code repository: https://svn.code.sf.net/p/opencity/code/ (svn), https://sourceforge.net/p/opencity/cvs/ (cvs)
+- Code language: C++
+- Code license: GPL-2.0
+
+https://github.com/frodrigo/opencity, https://github.com/vorot93/opencity, https://github.com/AnotherFoxGuy/OpenCity
+
+See also [OpenCityNeo](https://github.com/icecoolinux/opencityneo)
+
+## Building