removed entries

- altera terra is not clearly marked as open source (no license information in the source or binary packages)
- sworsorc is not open source (all rights reserved)
- astral clades is not clearly marked as open source (no license information in the source or binary packages)

games/strategy/altera_terra.md

@@ -1,14 +0,0 @@
-# Altera Terra
-
-_Altera Terra is a Civ-like turn-based strategy game._
-
-- Home: https://sourceforge.net/projects/alteraterra/
-- Download: https://sourceforge.net/projects/alteraterra/files/AlteraTerra/
-- State: beta, inactive since 2007
-- Keywords: TBS
-- Code: https://svn.code.sf.net/p/alteraterra/code/
-- Language(s): Java
-- License: GPL-2.0
-
-## Building
-

games/strategy/astral_clades.md

@@ -1,12 +0,0 @@
-# Astral Clades
-
-_A turn-based, 4X strategy game with some real-time tactical and also role playing aspects._
-
-- Home: https://sourceforge.net/projects/astralclades/
-- State: beta, inactive since 2012
-- Code: https://svn.code.sf.net/p/astralclades/code/
-- Language(s): Java
-
-## Building
-
-Uses LWJGL.

games/strategy/blitzkrieg.md

@@ -9,5 +9,7 @@ _Little turn-based strategy game based on Pendulous shareware rules._
 - Language(s): Java
 - License: GPL
 
+See also [Pendulous](http://www.blackfalcongames.net/?p=225).
+
 ## Building
 

games/strategy/sworsorc.md

@@ -1,11 +0,0 @@
-# Sworsorc
-
-_Online, turn-based epic swords and sorcery strategy game._
-
-- State: beta, inactive since 2014
-- Keywords: online
-- Code: https://github.com/cjeffery/sworsorc
-- Language(s): Java
-
-## Building
-