descriptions of entries checked and either incorporated to keywords and inspirations or redundancies removed

entries/sdl_game_engine_2d.md

@@ -3,11 +3,9 @@
 - Home: https://sourceforge.net/projects/sge2d/, https://web.archive.org/web/20110526140520/http://agnosent.com:80/wolfcms/open-source/sge2d
 - State: beta, inactive since 2014
 - Download: https://sourceforge.net/projects/sge2d/files/sge2d/
-- Keyword: framework
+- Keyword: framework, 2D
 - Code repository: https://gitlab.com/osgames/sge2d.git (backup of svn), https://svn.code.sf.net/p/sge2d/code (svn)
 - Code language: C
 - Code license: MIT
 
-2D game programming framework for c/c++ programmers with least possible dependencies.
-
 ## Building