Build to the highest top rank. Challenge – Hosted by City Island 6

Unlock the ultra-rare Train Museum!

Build to the highest top rank. Challenge

Join Conversion Champions! Build, grow, and claim the grand prize: the ultra-rare Train Museum.

The challenge starts March 16, 2025 — ends March 19, 2025.

More events by City Island 6

Read more about Sprint away.

Event Ended Challenge

by City Island 6

Unlock the ultra-rare movie set.

Mar 11, 2025 — Mar 18, 2025

Read more about Flip over and play.

Happening Challenge

by City Island 6

Flip over and play.

Unlock the ultra-rare ufo crash building.

Mar 19, 2025 — Mar 26, 2025

Read more about Play builder battle.

Event Ended Challenge

by City Island 6

Play builder battle.

Compete for glory to win rare rewards.

Feb 5, 2025 — Feb 8, 2025