Hydra, Atari Lynx.
Hydra was originally an arcade game developed by Atari. It was also ported to the Atari Lynx which is the only home port of this game for a video game system. There were also a few home computer ports (Commodore 64, Amiga and Atari ST among others) but the Lynx was the only video game system, handheld or otherwise, that Hydra was developed for.
The Atari Lynx version of the game got somewhat mixed reviews. However, chances are that if you like Roadblasters then you will like this game as well. In addition, it’s the only way to play on a handheld and the easiest to find a legitimate copy of unless you want to track down one of the computer versions or an arcade machine. Of course, there is always the emulation route it which case you may as well play the arcade version.