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

entries/ltris.md

@@ -4,7 +4,7 @@
 - Inspiration: Tetris
 - State: mature, inactive since 2013
 - Download: https://sourceforge.net/projects/lgames/files/ltris/
-- Keyword: puzzle, open content
+- Keyword: puzzle, open content, clone
 - Code repository: https://svn.code.sf.net/p/lgames/code (svn part of it)
 - Code language: C
 - Code license: GPL-2.0
@@ -12,6 +12,4 @@
 - Assets license: GPL-2.0
 - Developer: Michael Speck
 
-Tetris clone.
-
 ## Building