additions (from f-droid) and some link updates

entries/tttris.md

@@ -0,0 +1,12 @@
+# Tttris
+
+- Home: https://code.google.com/archive/p/tttris/
+- State: mature, inactive since 2012
+- Download: https://f-droid.org/de/packages/com.seavenois.tetris/
+- Platform: Android
+- Keyword: arcade
+- Code repository: https://archive.softwareheritage.org/browse/origin/http://tttris.googlecode.com/svn//directory/ (svn)
+- Code language: Java
+- Code license: GPL-3.0
+
+## Building