The Phantom Fortress is a non-member adventure that was released on January 5, 2017. The Hard Mode was released on April 12, 2018. Prior to January 18, 2018, this adventure was for members-only. It follows the Alphas after the Mira Feather cleanses the area. The Alphas attempt to disable the Fortress to keep it from being moved by the Phantoms.
The player must talk to Cosmo at the start of this adventure.
The player must travel upward through a small clearing to find Cosmo.
Cosmo explains the the Phantom Fortress is currently stuck in place so the player must disable it while they still have the chance.
The player must continue toward the Phantom Fortress and talk to Cosmo.
Travel upward to the end of the Phantom Fortress footprint.
Cosmo explains how dangerous it will be if the Phantom Fortress starts moving again and tells the player that Sir Gilbert will know how to stop it.
The player must next find Sir Gilbert.
Travel up through another fortress footprint and then right to the fortress' actual foot while avoiding Phantoms.
The blue banner must be taken to the blue banner stand, which is located at the bottom-left of the meadow area.
The player can optionally travel through a hidden path located down below the blue banner stand. There is a chest along this path that contains either 50 Gems, 100 Gems, the Fortress Footprint Rug, or the Phantom Lookout prize.
The red banner can be obtained by trapping all of the Phantoms around the black banner stand.
To trap the Phantoms, the player must first find the nearby cogwheel to repair the Mechachomper.
The red banner must be taken to the red banner stand, which is located at the top-left of the meadow area.
The player can optionally travel right and then upward from the red banner stand to reach a treasure chest holding 50 Gems.
The player can optionally travel through a hidden path to the right of the red banner stand. On this path, there is a chest that contains either the Phantom Lookout prize, the Fortress Footprint Rug prize, 100 Gems, or 50 Gems.
The black banner can be obtained by trapping all of the Phantoms around the red banner stand using the nearby Chomper Plants.
The player can optionally travel through a hidden path located down and right from the black banner stand. This path has a chest that holds either 50 Gems or 100 Gems.
The white banner can be obtained by trapping all of the Phantoms around the blue banner stand.
To trap the Phantoms, the player must first water the nearby Chomper Plants.
The white banner must be taken to the white banner stand, which is located in the middle of the meadow area at a small pond.
The player can optionally travel through a hidden path located down at the bottom-right of the pond. This path leads to the Raccoons-Only passage, which contains the Bunny Ear TV prize.
Once all four banners have been raised, the player must travel back up to Sir Gilbert.
Upon reaching Sir Gilbert, a short cut-scene is player to show the Phantoms retreating.
Sir Gilbert explains that the Phantoms retreated after seeing all the tiger troopers. He goes on to say that Cosmo is at the foot of the fortress working to prevent it from moving again.
The player must find Cosmo once again.
The player must travel to the left from Sir Gilbert until they reach the foot of the fortress where Cosmo appears.
Cosmo explains that he is using vines to keep the legs from moving, but that the legs must be disabled completely before they begin to move again.
Cosmo requests that the player water the buds on the vines so that they can grow to help the player reach the top. At the top, the player is asked to look for a control lever that will shut down the leg. He also explains that shutting down two of the legs should allow the player to reach the upper levels.
The player must disable the first leg.
In order to reach the top of the leg, the player must take water from the nearby pond and water the buds along the vines. Some of these buds turn into vines that can be climbed, while others simply bloom into flowers for a Gem and Courage Point bonus.
Before continuing all the way up the leg, the player can take the far right vines to reach an Arctic Wolf passage that contains a chest with the Full Moon Decoration item.
Once the top of the first leg is reached, the player must solve a puzzle that involves spinning round tiles to form a path from a green power source to the lever.
The player should avoid the electrified pipes here, as they will shock the player and cause them to lose one heart.
Once the lever is powered, it can be activated to destroy the nearby Fortress Control Panel and disable the leg.
The player must then disable the second leg.
To reach the second leg, the player can either travel left across a platform and take a vine down, or they can go back down the original vine until they reach the vine section that crosses the trees on the left.
At the second leg, the player must once again collect water from the nearby pond and water the buds on the vines until a path grows to the top of the leg.
At the top of the second leg, the player is blocked by some metal panels that must be knocked over.
Beyond the first set of panels are a pair of electrified pipes and a Phantom Watcher where the player must time their movement so that they do not get hit.
After the watcher, there are another set of panels that must be knocked down and finally a small puzzle to power the lever.
Once the lever is powered, it can be activated to destroy the nearby pipes and disable the second leg.
The player can optionally travel to the left of the second leg's foot to find a chest that contains 100 Gems. The player can also continue left to find the Elephants-Only passage, which contains a chest with the Tiger Stripe Rug prize.
The player now must explore the upper levels by entering the door that opens to the right of the second leg.
The Upper Levels
Once in the upper levels of the Phantom Fortress, the player must continue to explore.
The player must continue right across the platform while avoiding the green rays of the Phantom Lookouts along the wall.
If the player is spotted by a lookout, it will summon Phantom Webs on either side of the player and call forth a pair of Phantoms that will slowly move toward the center of the webs. If the player has a strong enough attack, they can simply break the webs and run before the Phantoms reach them. Alternatively, the player can use Boomseeds to destroy the Phantoms and the Phantom Webs.
The player should continue right along the platform while running past or destroying Phantoms along the path until they reach a ladder.
Before traveling up the ladder, the player can optionally continue right to flip a lever that will turn off an upcoming Phantom Watcher, which guards a treasure chest.
After traveling up the ladder, the player should continue right and once again avoid the Phantom Lookouts.
After the lookouts, the player should travel down a series of ladders while avoiding or destroying Phantoms in the way.
At the base of the ladders, the player can optionally travel left to a treasure chest if they had previously disabled the Phantom Watcher here. The treasure chest holds 150 Gems.
Before continuing, the player can optionally travel right along the platform to reach a lever puzzle that powers a door. Once solved, the puzzle will reveal a treasure chest containing 250 Gems.
Before solving the puzzle, the player can use a hint from the foot of the second Phantom Fortress leg to enter a different arrangement. If copied correctly from the hint, this will open a hidden passage that contains unsent bottled messages along with a treasure chest that holds the Fortress Control Panel prize.
The player should continue by going down a vine that leads back to the forest.
The player's next task is to disable the third leg of the Phantom Fortress.
The player should travel up the vines while avoiding the Phantoms to reach the top of the leg.
Before traveling up, the player can optionally trap the Phantoms on the ground by leading them into nearby Chomper Plants.
The player can also take water from the nearby pond to water the vine buds, which will bloom into flowers and reward extra Gems.
At the top of the third leg, the player must navigate around some electrified pipes and a Phantom Watcher.
After getting by the first obstacles, the player must break down some metal barriers and then small a lever puzzle to disable the leg.
Once the final leg is disabled, the player must open the cell to rescue the trapped animals.
The player must travel to the left and up a ladder to reach a lever puzzle.
Once the lever is powered, it can be activated to open the cell and free the animals.
After the cell is opened, it is revealed that Greely is disguised as a Sheep in the cell with the other Sheep.
Greely then goes on to complain that the player ruined months of careful planning and infiltration. He then requests that the player escort the sheep to safety.
The player must find a path to get off the Phantom Fortress to rescue the Sheep.
The player should travel right along the platform and down to an area where Phantoms are spawning.
The player should then distract or destroy the Phantoms so that the Sheep can safely escape.
The player must then continue right, down a ladder, then down the vines on a leg of the fortress to reach the ground.
Finally, the player must talk to Sir Gilbert.
Sir Gilbert congratulates the player for disabling the Phantom Fortress' legs and rescuing the trapped animals. He also declares that now is a perfect time to finish off the Phantoms inside the fortress.
Cosmo then chimes in to remind Sir Gilbert that it is more important to find the heartstone of the rescued Sheep and lead them safely back to Jamaa.
Sir Gilbert agrees with Cosmo but vows to return and end the feud with the Phantoms once and for all.
The player is then presented with a choice of five reward chests.
Before leaving the adventure, the player can optionally water one last vine bud to reveal a flower with several sacks of Gems.
The Arctic Wolves-Only passage is hidden off to the right of the first fortress leg. Once the right side of the vines are watered, the player can climb up and travel right through a hidden forest passage to reach this gate.
Prior to April 12, 2018, this was the second "3D" adventure to be released without a hard mode, the first being The Forgotten Desert.
When this adventure was made available to all Jammers, some of the animal passages changed. The Bunnies-Only Passage got changed to a Raccoons-Only Passage, the Wolves-Only Passage got changed to a Horses-Only Passage, and the Tigers-Only Passage got changed to an Elephants-Only Passage.
The Koalas at the first footprint you come across appear to be the same Koalas you see in Meet Cosmo. Namely, you can find Tobias, Isaac, Rosalind, and Eden.