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

entries/amphetamine.md

@@ -2,7 +2,7 @@
 
 - Home: https://packages.debian.org/stable/games/amphetamine, https://web.archive.org/web/20101023090423/http://homepage.hispeed.ch/loehrer/amph/amph.html
 - State: beta, inactive since 2008
-- Keyword: platform, open content
+- Keyword: platform, open content, 2D
 - Code repository: @see-home
 - Code language: C
 - Code license: GPL-2.0
@@ -10,6 +10,4 @@
 - Assets license: GPL
 - Developer: Jonas Spillmann, Lukas Löhrer, Patrick J. Naughton, Chris Laurel
 
-2D platform game.
-
 ## Building