Last Verified: November 7, 2026 | 3 working Mini City Tycoon codes.
Looking for Mini City Tycoon codes for free Diamonds? Three codes work right now: 300K, TRAINS and FIRST. Each one gives you 50 Diamonds, so that is 150 Diamonds for free.
Diamonds help you grow your city faster. Below is how to redeem the codes in the Settings menu, when new ones tend to show up, and every code that has ended.
Active Mini City Tycoon Codes (November 2026)
| Code |
Reward |
Action |
| 300K |
50 Diamonds |
|
| TRAINS |
50 Diamonds |
|
| FIRST |
50 Diamonds |
|
Expired Mini City Tycoon Codes
These codes don’t work anymore, so you can skip them. The newest ones to end are at the front.
200k 100M UPDATE19 UPDATE secret BUG
How To Redeem Codes in Mini City Tycoon
- Open Mini City Tycoon on Roblox and wait for your city to load.
- Click the Settings button on the right side of the screen.
- Press the Codes button to open the code box.
- Type the code exactly as shown, then click the green tick to get your Diamonds.
When Do New Mini City Tycoon Codes Drop?
Past codes were named after big numbers and updates, like 100M, 200k and 300K, and UPDATE and UPDATE19. So the next big number or the next update is the best time to look.
About Mini City Tycoon
Mini City Tycoon is a free building game from Aurion Games. You start with an empty map and build roads, houses, stores and skyscrapers until it turns into a huge city. AI cars and people drive and walk around your streets, and you unlock new buildings as you level up. You can also visit other players’ cities and drive around in cars. Up to 9 players share a server.
It came out in 2025 and has passed 167 million visits and 357 thousand favorites. About 91 percent of the people who voted gave it a thumbs up.
This page was last checked on November 7, 2026. Codes are case-sensitive, and they can run out at any time.