Before Windmill Software and CHAMProgramming, Orion Software was one of the first game developers that specialized in creating PC "clones" of well-known arcade games, usually from the extensive catalogs of Atari, Taito, or Williams.
Lack of originality or official license notwithstanding, their games are excellent conversions of famous classics that, surprisingly enough, often look and play better than official PC ports. Aside from great gameplay, Orion games are also notable for being coded with a built-in timer - which means they work at the right speed even on modern computers. Kudos to the designer Greg Kuperberg for having such foresight.. it's not so often you find a 1982 game that doesn't need to be slowed down :-)
Review By HOTUD. Download/play it.