Requires 3-D glasses.
Players fight against hundreds of robot warriors equipped with particle beam weapons. The game is played from the bird's eye view. The players mission is to blast through 9 levels of the most unbelievably treacherous 3-D terrain imaginable, shooting aliens and ships on three different planes.
One of the buttons is used to cycle through the three planes. Along the way, there are several bosses that the player have to defeat. The later ones drop a power-up, which the player can use to upgrade his ship. Some of the power-ups include double shots and laser beams. Another power-up gives players the ability, to have an extra ship on his side and will join the fight, they'll later serve as a backup. Blade Eagle is designed for play in conjunction with the Sega 3-D Glasses
Blade Eagle 3-D (ブレードイーグルの 3-D?) is a vertical rail shooter video game, developed and published by Sega and was first released on March 26, 1988 in Japan for the Mark III as Gold Cartridge, December 31, 1988 in North America and later in Europe.
Source: Wikipedia, "Blade Eagle 3-D", available under the CC-BY-SA License.