Charge

Charge is a very simple fan-made clone of Dune II, written in Java. It uses graphics from the original but, at least in my tests, has no sound. It supports only skirmishes with 1-3 computer players. A reduced set of units and buildings are available and there is no rock, you just build on sand. The last version is dated 2011 and is made of a very small .jar file only.

Official site
https://sites.google.com/site/fvdhamnow/Charge