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

games/aleph_one_marathon.md

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+# Aleph One: Marathon
+
+_Continuation of Bungie's Marathon 2 FPS game engine._
+
+- Home: https://alephone.lhowon.org/, https://github.com/Aleph-One-Marathon/alephone/wiki, https://sourceforge.net/projects/marathon/
+- Media: https://marathongame.fandom.com/wiki/Marathon_(Game)
+- State: mature, inactive since 2015
+- Download: https://sourceforge.net/projects/marathon/files/
+- Platform: Windows, Linux, macOS
+- Keywords: action, fps
+- Code repository: https://github.com/Aleph-One-Marathon/alephone.git, https://svn.code.sf.net/p/marathon/code/ (svn)
+- Code language: C++, Lua
+- Code license: GPL-3.0
+
+## Building
+