

This is the story of the first encounter with the Bydo, taking place in the year 2163. The player controls the R-9A Arrowhead to free humanity from the Bydo threat. Other versions of the story state that First Contact started after the World Government had sent a probe to Galaxy X1X. Having found the Bydo building their forces, the government prepared the R-9A in advance.
| Edition | Platform | Release Date | Region |
|---|---|---|---|
| Standard Edition | Arcade | Jul 1, 1987 | Worldwide |
| Standard Edition | Sharp X68000 | Jul 1, 1987 | Worldwide |
| Standard Edition | PC-8800 Series | Jul 1, 1987 | Worldwide |
| Standard Edition | Amiga | Jul 1, 1987 | Worldwide |
| Standard Edition | MSX | Jul 1, 1987 | Worldwide |


This is the story of the first encounter with the Bydo, taking place in the year 2163. The player controls the R-9A Arrowhead to free humanity from the Bydo threat. Other versions of the story state that First Contact started after the World Government had sent a probe to Galaxy X1X. Having found the Bydo building their forces, the government prepared the R-9A in advance.
| Edition | Platform | Release Date | Region |
|---|---|---|---|
| Standard Edition | Arcade | Jul 1, 1987 | Worldwide |
| Standard Edition | Sharp X68000 | Jul 1, 1987 | Worldwide |
| Standard Edition | PC-8800 Series | Jul 1, 1987 | Worldwide |
| Standard Edition | Amiga | Jul 1, 1987 | Worldwide |
| Standard Edition | MSX | Jul 1, 1987 | Worldwide |