Bygone Island (level)

Bygone Island is one of the three hub world areas in Sonic Boom: Rise of Lyric. A tropical island paradise with several remnants from the Ancients, this location houses a cozy village with plenty of residents and is as well the home of Team Sonic. It can be accessed after clearing The Pit. From here, the player can access the game's last seven levels.

During their hunt for the Chaos Crystals, Team Sonic came to Bygone Island which turned out to be a center point for the remaining Crystals' locations. Due to its importance, the island was on the verge of being besieged by Lyric's forces. From Bygone Island, Team Sonic gathered the remaining Crystals before facing Lyric in a final showdown.

Overview
Bygone Island is a lush, tropical isle surrounded by blue sea to the west, south and east while its northern borders extends to at least the foot of Crater Lake. The southern borders of the island consist of beautiful beaches, with those to the west being the largest, which are dotted with grass patches surrounded by fences, palm trees and some boulders on both land and in the sea. To the east lies Coral Bay, which holds a large and tall platform that serves as the entrance to the Ocean Purification Plant and to the southwest lie the seclude Mystery Bay. Each bay is enclosed by black skerries.

In the middle of the island lies the local village which is surrounded by stone walls several stories tall and with entrances in the south, west and north. The village itself is simple, yet cozy, with houses, huts and buildings made mostly of wood (sometimes of stone) and tin roofs or straw roofs, and features stone staircases, wooden paths and bridges and as well a local water wheel, well and fountain. The northern part of the village holds the Town Square and the western part extends into the wilderness near Mystery Bay. Much of the village however, is under construction and seems to have been damaged at some point.

The northern parts of Bygone Island have more open wilderness and valley-like passages. A passage north of the village especially holds the farmlands and a bridge leading to Slowpoke Isle. Around the village are also hut-like stilt house at the edges of cliffs. Across the island also lie several ruins from the Ancients. The northeastern parts have the ruins of a building and pillars, the beaches have small towers with UFO-like air balloons, Mystery Bay has a retractable bridge to Creeper Gorge and Coral Bay has floating metal platforms. To the south also lies the Seaside Harbor Light, a lighthouse-like transporter to the Sky Citadel.

Story
A millennium ago, Bygone Island was supposedly an outpost amongst the Ancients' civilization as indicated by their countless ruins around the island.

In the present day, the island's village had been heavily damage and several reconstruction projects were set up around the island to fix it. Meanwhile, the island was threatened by Lyric's approaching forces after the villain had be released by Sonic. However, the villagers (excluding Perci) cared more about the re-election of Mayor Fink, who was running unopposed.

Amidst the chaos, Team Sonic came to Bygone Island in search of the Chaos Crystals to stop Lyric. After retrieving the Radiant Crystal from Crater Lake and returning to the village to find the next, Team Sonic found Lyric and Dr. Eggman looking for them. Sonic insisted he lured the two villains away since this was his fault, but Tails convinced him to let the team help. Sonic called out to the mad doctor and the snake, and the team ran to their next location with the enemy following them. They soon after lost the villains and returned to Bygone Island with the Verdant Crystal.

Resuming their mission, Team Sonic secured the Tidal Crystal and use the Angler to return to Bygone Island from the Ocean Purification Plant, from where they continued to Creeper Gorge and came back with the Twilight Crystal. After leaving Bygone Island to find the Sky Crystal, the Team Sonic eventually returned after defeating Lyric for good. To celebrate their victory, a festival was held in the village where they scrapped the remaining Destruction Troops. Cliff praised Sonic for saving the world, but Sonic humbly insisted that he and his team did it together, now having learned the value of having a team. With the adventure over, they all joined together in watching the fireworks.

Gameplay
Bygone Island is a free-roaming and non-linear area to encourage exploration. It serves as a central hub from where the player can access the other areas in the game which include: To enter these areas from Bygone Island (with the exception of Crater Lake), the player must unlock the sections containing their entrance points with their respective Crystal Lock using the correct Chaos Crystal. For this level, the majority of the objectives focus on proceeding to the next area.
 * Crater Lake
 * Slowpoke Isle
 * Ocean Purification Plant
 * Undersea Bolt
 * Creeper Gorge
 * Sky Citadel
 * Lyric's Lair

This level contains a variety of different gimmicks, especially for the specific character actions for the playable characters. This includes Spin Ramps and Air Targets for Sonic, Tails Vents for Tails, Climbable Walls and Ceilings and diggable ground for Knuckles, and Beam Swings and Balance Beams for Amy. There are also a few Hydro Gates for letting the player roam on around in the bays. Additionally, there are a few puzzles to solve with the Button and Enerbeam mechanic.

From within Bygone Island, the player can participate in optional side-quests by interacting with the non-playable characters, though some of them cannot interacted with before reaching a certain point in the game. Completing the optional side-quests will either award the player with a Power Glyph or open paths to new collectables.

Bygone Island hosts nearly no enemies to be fought, except on the path to Slowpoke Isle. Environmental hazards found on Bygone Island are spread out, but includes floating mines in the bays that explode upon contact and bottomless waters for both seas and rivers. Around the gate to Crater Lake there are also retractable spikes and spiked balls that move along both walls and character gimmicks, which cause damage upon contact. While not necessarily dangerous, there are also several platforms which flip in intervals, causing the player to fall down.

Description
When arriving on Bygone Island, the player has to travel to the sealed entrance gate to Crater Lake in the ruins in the northwestern corner of the island. Here, the player must climb the ruins in the lower corner, next to Amy's Balance Beam section and press a Button to active a Tails Vent which will take the player to another Button which activates a Tails Vent as well, though in the middle of the ruin. Use that vent to reach the highest area in the corner of the ruins where there is another Button. Press that to open the gate to Crater Lake and enter it.

When back from Crater Lake, go to the Town Square in the northern part of the village. Unlock the Crystal Lock there and proceed down the opened path to Slowpoke Isle. After returning to Bygone Island, go to Coral Bay and scale the shifting footholds (most recommended with Sonic) to the platform and open the Crystal Lock there to Ocean Purification Plant. Then, after clearing Undersea Bolt, go to Mystery Bay and unlock the Crystal Lock there are raise the bridge to Creeper Gorge. Once, back from clearing Creeper Gorge, go to Seaside Harbor Light from where the player proceeds to Sky Citadel. The player will then not return to Bygone Island until the game is cleared.

Collectibles

 * Crowns: 19
 * Shinies: 15
 * Robot Scrap Chests: 22

Mayor Fink
The player is assigned to repair various areas of the hub-world by spending Robot Scraps, similar to the quest at Cliff's Excavation Site.