Standalone which includes new features and doesn't require any additional files anymore. Only requires Dosbox or similar. Among the new features are...
The first 3D PC game ever! Hovertank 3D debuted the amazing technology that was used to usher in the First Person Shooter genre with Wonfenstein 3D. You are mercenary Brick Sledge, and you've been hired by an unknown organization to rescue people from cities targeted for limited nuclear strikes. With an energy cannon as your main weapon, you must race against the clock, blasting away at nuclear mutants, armored patrols and other terrors bent on your destruction. Innocent lives depend on you and your Hovertank. Get in, get `em, and get out, before you get nuked!
The source code can be obtained at Github.com.
From the repository:
"This repository contains the source code for Hovertank 3-D. The source code is designed for Borland C++ 2.0, but compiled fine with Borland C++ 3.1 at the time of this release. It is released under the GNU GPLv2. Please see COPYING for license details. This release does not affect the game data files. You will need to legally acquire the game data in order to use the exe built from this source code. "