added an entry, converted some Hg repositories to Git

games/misc/_toc.md

@@ -13,6 +13,7 @@
 - **[RPDungeon - computer aided role playing](rpdungeon.md)** (Pascal, GPL-2.0, beta, inactive since 2006)
 - **[Rolemaster Office](rolemaster_office.md)** (Java, Apache-2.0, mature)
 - **[Rolisteam](rolisteam.md)** (C++, JavaScript, GPL-2.0, mature)
+- **[World Builder](world_builder.md)** (Visual Basic, GPL-2.0, mature, inactive since 2007)
 - **[sCoreForge Pathfinder Character Creator](scoreforge_pathfinder_character_creator.md)** (Excel Visual Basic, mature)
 
 [comment]: # (end of autogenerated content)

games/misc/world_builder.md

@@ -0,0 +1,13 @@
+# World Builder
+
+_Randomly generates scientifically-plausible solar systems, simulates plate tectonics, calculates climate, randomly generates towns, city blocks, NPCs, treasure hoards, dungeons, and other RPG-related things._
+
+- Home: https://sourceforge.net/projects/worldbuilder/
+- State: mature, inactive since 2007
+- Download: https://sourceforge.net/projects/worldbuilder/files/
+- Platform: Windows
+- Code repository: https://gitlab.com/Trilarion/worldbuilder.git (conversion of cvs), https://sourceforge.net/p/worldbuilder/code/ (cvs)
+- Code language: Visual Basic
+- Code license: GPL-2.0
+
+## Building