"Solve the mystery of the unusual undersea discovery. Complete all the tasks on time and get an incredible reward!"
( May 24, 2016 09:00:00 +0200 remaining)
Lost Colossus is a Tourist Island Timed Quest in which the player has 192 hours to build and upgrade a total of 4 new fixed structures with assets leading to exclusive rewards. It was released as part of an update on May 16, 2016. 
"There's been an unbelievable discovery on Tourist Island – the hand of a gigantic statue has appeared above the surface of the sea! What else does the warm south sea hide? It's up to you to find out!"
"The residents are asking the mayor to: solve the mystery"
"Descend beneath the water and find out what secrets the warm south sea hides. Complete all tasks on time and get an amazing reward!"
Stage 1 - The Hand
"There's been an unbelievable discovery on Tourist Island: the hand of a gigantic statue has appeared right out of the water. What else do the warm southern waters hide? It's up to you to find out!"
"Hurry to Tourist Island to solve the mystery of the amazing undersea discovery."
A start has been made. Time to start investigating!
Stage 2 - Hydrological Service
"You need to dive to the bottom of the sea to find out what it hides. You need the Hydrological Service to do this."
"Build the Hydrological Service and lay the Restoration Service Foundation."
Excellent! Here are some building materials as a reward. Use them wisely!
Stage 3 - Colossus
"Historians say that the hand is the top of the ancient Colossus which was lost many years ago. Complete the first dive to confirm this theory!"
"Build the Restoration Service and lay the Colossus Foundation. Complete your first underwater dive."
Divers have discovered the ruins of the Colossus in the depths of the sea! Hurry and start the next task to begin restoring it and turning it into a lighthouse!
Stage 4 - Ancient Port
"Many years ago, there was an ancient sea port on the shores of Tourist Island. Its ruins are now underwater. Take care of its reconstruction!"
"You need to carry out amelioration works to restore the Ancient Port and Colossus. You can't restore them underwater!"
You're doing great! Tell your friends about the exciting task you just completed!
Stage 5 - Temple of Helios
"You managed to discover the ruin of the Temple of Helios! It was an amazing palace dedicated to the Sun God."
"Lay the Temple of Helios Foundation and build the Ancient Port Frame and Rhodes Watchtower. Get a great reward for your efforts!"
Your efforts haven't been in vain! You get a Greek Sphinx as a reward. It's in your Storehouse.
As a fixed building, the Greek Sphinx cannot be stored in the storehouse.
Stage 6 - Blue Seas
"The sea views of Tourist Island would enchant anyone! See these amazing views from the height of Rhodes Watchtower!"
"Upgrade the Restoration Service to complete the restoration of the Colossus. Then you can enjoy a sea view from the height of the Rhodes Watchtower."
You did a great job on this task, and you get building materials as a reward! Want to tell your friends?
Stage 7 - The Art of Restoration
"Restoration is a series of measures aimed at restoring a building. Spectral analysis is one of the most important tools used in this process."
"Build the Main Restoration Complex and carry out a spectral analysis to complete the restoration of the buildings as precisely and correctly as possible."
Good job! The citizens of Tourist Island are really inspired by what you're doing, so they give you some free building materials!
Stage 8 - Best Restoration Experts
"Attract the most famous and experienced restoration experts to restore the Ancient Port and Colossus."
"Restore the frame of the Colossus and attract the most famous restoration experts to help you with this daunting task."
You completed the task! Don't rest on your laurels, keep building!
Stage 9 - Through the Ages
"Conservation is a part of the restoration process that ensures that the buildings are kept in their original state for many years."
"Restore the grandiose Temple of Helios. Don't forget to carry out the conservation process so that the temple stays in its original state for many years."
That's the ticket! Keep restoring the Colossus. Use the free building materials you're getting!
Stage 10 - Lighting the Way
"Invite your friends to join in with sending a light signal. It'll be very fun and incredibly profitable!"
"The last step in the restoration of the Colossus is turning it into a lighthouse! Once you are done, try to send a light signal to the ships. Don't forget to invite your friends!"
Wonderful! Just one step remains until you finish the restoration! Complete it with flying colors!
Stage 11 - Full Circle
"Complete this task and you’ll get an exciting reward!"
"Complete the restoration of the Ancient Port. Once the work is complete, flood the port area so that ships can enter the harbor again."
You rebuilt the Ancient Port! You receive the Shipping Company as a reward. Tell your friends!
For completing Stage 5
For completing Stage 11
Achievement after getting the Shipping Company
"You rebuilt the sunken port and get a new achievement – Restorer of the Sunken Port. Tell your friends!"
Social Quantum's internal name for this quest is " Потерянный Колосс" which translates to " Lost Colossus".
Social Quantum's ID for this quest is 10076170.
↑ SQ Forum refer the date as May 15, 2016
SQ Forum: Update 05.15.2016