Sonic X-treme

Development Info Prototype Info Prerelease Info

Overview#

This prototype is documented on Hidden Palace.

• The demo starts with the Sonic X-treme logo.
• A preliminary title card appears with the level name "Jade Gully".
• The music that plays in this demo is Quartz Quadrant Good Future from the International versions of Sonic CD.
• There are 50 rings in the level.
• There are floating diamond-shaped objects scattered around the level, but only the first one shoots Sonic up into the sky. The functional one also appears in footage of the Metal Sonic boss fight, albeit in a different location.
• The score counter keeps going up by itself for some reason.
• When the time runs out, it loops back to 5 minutes.
• Pressing B allows Sonic to Spindash forward uncontrollably. This can be done either standing still or while running. Oddly, repeatedly tapping the button at a stand-still and jumping immediately after will allow Sonic to gain tremendous height, to the point where the skybox loops.
• The camera controls described by Christina Coffin are conspicuously absent. Holding L and R instead allows Sonic to run in place for some reason.
• An early Game Over screen can be triggered by pausing and pressing C. The music that plays here is also from the International versions of Sonic CD.

Unused Models#

Fang the Sniper#

Fang the Sniper resides as an uncompressed SGL model in the game's files starting at address 656484.

The model is made up of 397 polygons, 550 vertices, and 915 edges.

Skeletal rigging is intact for each segment of the model, though there is no animation data.

Vertex colors are intact for most of the head and body, but is otherwise broken and useless.

(Bonus: Restored using a screenshot for reference)

Metal Blade#

Metal Sonic's boss arena can be found starting at address 553916

The model is made up of 82 polygons, 328 vertices, and 328 edges.

There is no color data, and the textures are not in the ROM.

Unused Graphics#

These textures can be seen below the playfield and were used in the Metal Sonic boss arena as the floor.

A small, yellow flower. Screenshots show these on the outskirts of Fang's boss arena.

A rocky looking texture. While this technically is used on the environment, it appears far beyond the map boundaries and can't even be seen through exploiting the jump height via Spindashing. It matches the texture used for the edges of the water.