is a video game developed by Positron

Positron

The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1e, a spin of ½, and has the same mass as an electron...

 and published by Square

Square Co.

was a Japanese video game company founded in September 1983 by Masafumi Miyamoto. It merged with Enix in 2003 and became part of Square Enix...

 and released in 1999

1999 in video gaming

-Events:*British Academy of Film and Television Arts hosts the 2nd annual BAFTA Interactive Entertainment Awards*March – Game Over republished as “Game Over: Press Start to Continue”...

. In the same vein of gameplay as Tempest 2000

Tempest 2000

Tempest 2000 is a 1994 remake by Jeff Minter of the Dave Theurer 1981 arcade game classic, Tempest. Originally an exclusive to the Atari Jaguar, the game received critical praise for its 3D graphics, soundtrack, and gameplay.-Gameplay:...

, iS: internal section is a tube shooter, a type of shoot 'em up

Shoot 'em up

Shoot 'em up is a subgenre of shooter video games. In a shoot 'em up, the player controls a lone character, often in a spacecraft or aircraft, shooting large numbers of enemies while dodging their attacks. The genre in turn encompasses various types or subgenres and critics differ on exactly what...

where the player controls a ship "looking down" a long tunnel or tube, and the player can move around inside the cylinder, shooting enemies that it runs into while moving. It is an experimental project that responds to its 16 built-in tracks, or even your own music from a CD.