This article is about the Sonic Adventure Sub Game. For the Sonic the Hedgehog 2 Zone, see Sky Chase Zone.

Sky Chase (スカイチェイス, Sukai Cheisu^?) is a Sub Game that appears in Sonic Adventure and its enhanced port Sonic Adventure DX: Director's Cut. It is played while Sonic and Tails chase Dr. Robotnik's Egg Carrier in the Tornado (and, later, the Tornado II). The objective of Sky Chase is to survive the onslaught of enemies and gain as many points as possible.

Story

After Chaos 4 is defeated, Dr. Robotnik escapes to the Egg Carrier and Sonic and Tails give chase in the Tornado. However, the heroes' ship is shot down by the villain's Egg Cannon, causing it to fall down and separating the heroic duo.

Much later, when Sonic tries (in vain) to reach the Egg Carrier through the Red Mountain, he encounters Tails in the new Tornado 2. With it, they give chase again to the vessel. After destroying the flying fortress' Egg Cannon, the heroes crash-land on the rear of the ship.

Gameplay

In both Acts of Sky Chase, the player has endless amount of ammo built inside the Tornado, and can lock-on the enemies before firing homing missiles (six closures as a maximum). The tornado has a Health Gauge which depletes each time it gets hit. If the health gauge reaches zero, the player loses a life.

Overview

Act 1

The first Act takes place high above the clouds. Upon starting, the player flies toward the Egg Carrier while noticing there are small troops of white planes flying towards them. In the next section, the Tornado 2 will fly across the back top of the ship which has several missile launchers ready to fire at the player. In the next sections, the player will fly toward the right wing, front top of the ship, then left wing, which is flooded with missile launchers and several falling planes.

Upon reaching the front of the Egg Carrier, the ship readies the Egg Canon, tearing a wing off the Tornado, and ending the first act.

Act 2

In this Act, the player flies in a dark, cloudy sky theme where huge troops of planes fly out from the Egg Carrier and toward the player. Act 2 starts much like the first Act, but this time travelling from the front of the ship to the back of the ship. Here, the player controls the Tornado 2, with many missiles being fired towards them. Afterward, the Tornado 2 will change to its attack mode and heads toward the ground part of the ship, where mines take place.

In the next sections, the Tornado will take several sorties at different angles of the ground part, front, and across the wings of the ship (all which are heavily guarded). Then the tornado returns to fly toward the front of the Egg Carrier crossing the ground part which is heavily guarded with missile turrets, mines and mechanical arms.

During the final section of the Act, the player will directly attack the Egg Cannon before it can fire, while avoiding incoming missiles. Here, the best strategy is to keep shooting the weapon when the huge doors open, then move out of the laser's way.

The Points awarded for each target shot down in both Acts are as follows:

Image	Object	Points	Description
	Missile	5	Projectiles shot from the missile launchers.
	Fighter Aircraft A	30	Two types of the standard white planes exist, each granting the same amount of points.
	Fighter Aircraft B	50	Advanced version of the Fighter Aircraft A that lead the white troops. Only appears in Act 2.
	Mine	20	Only appears under the Egg Carrier in Act 2.
	Missile launcher	30	Shoots missiles.

Note that destroying an enemy within a second of destroying the previous enemy multiplies the score (up to 10x).

Trivia

• Sky Chase is modeled after another one of Sega's video game series, Panzer Dragoon. Although the controls are simplified in comparison, the basic control scheme between the two games is the same.

• Originally, there was going to be a mechanical dragon miniboss in Sky Chase Act 1 (with red textures) and Act 2 (with blue textures), but it was scrapped because of difficulty and time restraints. This is shown if E (center camera) is held during the Acts. Through hacking, when this dragon is loaded into the game, its flying animation completed, it can breath fire but it does nothing to the Tornado. The player can attack it, but it does nothing. It simply just flies behind the Tornado.
• In the Japanese audio of the game, Sonic and Tails will scream in a panic as the Tornado spirals out of control. In the English audio, however, they respond with excitement.
• During the production of the Dreamcast version of Sonic Adventure, Sonic Jam models were used in this stage as placeholders. This is seen in pre-release screenshots of the game. In the final version, the models are still noticeably lower-poly than the usual ones and look only slightly modified from the Sonic Jam ones (namely to include green eyes and darker fur for Sonic). Sonic Adventure DX: Director's Cut uses the same higher-poly models as the rest of the game during Sky Chase.

Music

Videos

• Act 1
• Act 2