may look like a shooter from the 8-bit era but it's surprisingly just as good as any other Japanese freeware shmups.
The secondary shot direction can be controlled by moving your ship around and holding down the Z key when you're comfortable with the aim, much like Robotron: 2084.
Enemy projectiles will be sent back towards their direction if the X key is pressed when the reverse bomb gauge is full. Using the same button at any other time only launches the standard bomb.
The 60MB file is the actual game package, while the smaller version is just an update which can be used to overwrite the unzipped contents.