TerraWiz is a Java-based application that needs a Java Virtual Machine (JVM) to be installed before running. On first using the program, there is a dialogue to allow the user to choose their preferred language (English or Chinese) and operating mode (Beginner or Advanced). However, these settings can be modified later. See the TerraWiz home page (www.cs.stir.ac.uk/~kjt/software/graph/terrawiz.html) for an overview of TerraWiz.

TerraWiz consists of a single JAR (Java Archive) file. To run it requires recent Java support (JDK 1.6 or later). Install it anywhere convenient.