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|This location exists primarily or exclusively within the Sonic Boom continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
Sonic Boom: Rise of Lyric
Undersea Bolt is a sub-level in Sonic Boom: Rise of Lyric. It is an undersea route that leads from the Ocean Purification Plant to the southern beaches of Bygone Island. In this level, the player takes control of the Angler.
Undersea Bolt is a rocky seabed surrounding Bygone Island, cloaked in perpetual dark waters. The beginning of the level is a tall cavern, with the Ancients' underwater dock for the Angler in the back and the exits up front. Engraved in the left cavern wall is a large metal wall. Additionally, there are tower-like undersea pillars that are falling apart. All these structures carry the engravings of the Ancients. The exits out of the cave are narrow and dark tunnels with boulders and stalactites, which are only lit up by mines and a few artificial light sources.
Outside the caves, the Undersea Bot is a undersea chasm amidst a plentiful coral reef which has towering rock pillars and arches above. Like before, only a few artificial light sources illuminate this passage.
When Sonic and Amy took the Tidal Crystal from the Ocean Purification Plant, the place began to fall apart. As such, the duo used the docked Angler to escape through Undersea Bolt. On their way, they were ambushed by a trio of Tunnel-Bots, who intended to take back the Crystal. However, the duo destroyed their pursuers and got back on dry land.
In Undersea Bolt, the player travels through an undersea tunnel and a deep sea passage. For this level, the player takes control the Angler with Sonic and Amy onboard. The gameplay focuses mainly on surviving an obstacle course to reach the battle with the Tunnel-Bots. The first section is shrouded in darkness, making navigation harder, but the Angler's head lights can be used to illuminate the waters.
Environmental hazards in Undersea Bolt that cause damage upon contact include crumbling pillars (even after they hit the bottom), falling stalactites and boulders, and mines. The obstacles can be shot down with the Angler's weapons. These weapons include the fast, but weak Harpoon Shots, and the powerful, but slow Twin Torpedoes. Destroying obstacles awards the player with Rings.
In Undersea Bolt, the player's objective is to escape the Ocean Purification Plant. In the first segment, the player has to travel through a ravine while avoiding crumbling pillars for then to enter a tunnel littered with mines. At the end of this segment, the Angler begins traveling up a vertical tunnel where boulders fall down at the vessel. Afterwards, the player enters another tunnel with both falling stalactites and mines.
Upon emerging from the cavern tunnels, the player is pursued by three Tunnel-Bots which must be destroyed to clear the level. If the player is defeated at any point during Undersea Bolt, he/she must restart from the beginning.
- Despite only Sonic and Amy being playable for this level, Tails and Knuckles' icon are present among the character select icons as well. This might be because Tails and Knuckles were originally meant to be included in Undersea Bolt.