Sonic Lost World
In the Nintendo 3DS version of Sonic Lost World, the player can find Iron Material in the zones if the player finishes the stage successfully.
Wii U version
As the name states, Silent Forest is a gigantic forest of sorts. It has some resemblance to previous forest stages, including Jungle Zone from the 8-bit version of Sonic the Hedgehog, Tropical Jungle from Sonic the Hedgehog (2006) and Frog Forest/Lost Jungle from Sonic Heroes. However, it also has a large basis on Mushroom Hill Zone from Sonic & Knuckles, including a new mushroom-based gimmick and featuring a lot of classic enemies from the zone, such as Mushmeanie's, Clucker's and Madmole's. Grind rails are presentable in the level as well. Sonic can grind on the grind rails, but he must watch out for the upcoming minecarts ahead. The Crimson Wisp and its Color Power, the Crimson Eagle, appear in this zone as well as the Black Wisp.
Like the other zones in Sonic Lost World, Silent Forest has a different zone-themed level in the zone. The tone of Silent Forest switches into a haunted-themed area, but a forest is seen in the background. The music also changes considerably from jungle-like to tango. This zone also features a section for Sonic as a potential ‘stealth’ section in which Sonic has to navigate a zone without being spotted by Zor's robotic owl, giant non-anthropomorphic owls, and stone pig obstacles. Being spotted by Zor's owl will result in an instant death. The Magenta Wisp and its Color Power, the Magenta Rhythm, appear in this zone. At the end of the zone, Sonic will have to fight Zor in his robotic owl.
Zone 3 takes place in a frozen tunnel system/cavern, much like the 3rd Zone of Windy Hill. However, the floors of the tunnels are frozen itself, making maneuvering much more difficult, and jumping more dangerous. Dozens of stalagmites and stalactites populate the tunnels (and hidden caverns beneath). When approached, they launch from their current position to the floor (or ceiling), posing a threat to Sonic. Cluckers armed in path-blocking vehicles, and Bombs are littered throughout the area, so even more precision and grace is required to make it out alive. The Cyan Wisp is used in this zone.
This zone takes place at an old ruins. Towards the end of the level, the rooms are dark and the player can only see the silhouettes of Sonic, the enemies and the scenery. While in this state, Sonic will not be able to use Homing Attack to target on enemies. Light switches are scattered throughout this portion of the level and they will turn the lights on for a few seconds. Sonic confronts Zor at the end of the zone. The Yellow Wisp is used in this zone.
Nintendo 3DS version
This is a giant maze filled with flower cannons and teleportation switches, somewhat similar to the Nintendo 3DS version of Frozen Factory Zone 2. There are two areas of this stage that one must go to before heading to the Capsule. At the beginning, there are three flower cannons, with the left one being accessible. To get to these areas, the player must jump into the flower cannons, which will send him/her to its respective area, skydiving. There are areas that one needs the Gray Wisp to scale up, and switches that only the Gray Quake can activate. Once the player gets through the first area, the player is sent back to the beginning of the stage, but all Rings that may have been collected respawn, and the left flower cannon has closed. However, the right cannon opens, and it sends the player to the second area. After the second area is complete, he/she returns to the beginning, where the center and final flower cannon opens. It sends him/her to the final section, which has the Capsule. The Gray Wisp is used in this zone.
This zone is a massive grinding stage, with some land in-between grinding sections. The majority of this stage consists of jumping from rail to rail, trying not to fall off or get hit by Badniks, however, there is a parkour/platforming section. Most of the land sections are areas where you need to defeat enough Badniks to progress. Near the end of this stage, there are electric rails which can only be used without being harmed is if the player has Invincibility, Super Sonic, a Thunder Shield, or the Ivory Wisp. The Ivory Wisp is used in this zone.
As seen in the screenshots and gameplay montages, this zone has the same details and design as Wii U zone 2. However, the owl does not instant kill the player if it spots him/her, but rather makes hazards or simply makes the zone tougher.
The boss is Zor and his robotic owl, but unlike the Wii U version, he flies up high to charge up a giant laser. A cannon is in the center of the stage, which is used to hit Zor, and must be controlled using gyroscope controls. There are fakes up high, though. The fake copies usually are crudely-made, and have forks or knives for wings, and look like they are made of cardboard. There are also some item capsules up there. But if one spends too much time without hitting Zor, the laser will fire. Once Zor is hit, the owl falls, Zor is knocked off and stunned, and the player can attack as much as he/she wants before Zor recovers. The player should repeat until Zor is defeated.