Rename your ship to one of the following names to receive ten gems and an achievement:

Basin City
BonanzaCreek (will also give you title of "Cheater")
Discovery
Galactica
Ghost Ship
Gotham
Grampus
Heart of Gold
Hispaniola
Innsmouth
Nautilus
Nostromo
Pequod
Red Five
USS Enterprise
U-96

-Set the system date to any of the following dates to get ten gems, an achievement, and the corresponding title:

April 14th: "Anno 1404 fan" title.
March 15th: "1503 A.D. fan" title
February 16th: "1602 A.D. fan" title.
January 17th: "1701 A.D. fan" title.

-Start a game between 3:00 to 05:00 a.m. in the morning to receive ten gems and an achievement.

-Play the game on November 11th at 11:11 a.m. to receive ten gems and an achievement.

-Earn achievements by doing the following tasks:

Build 1000 peasant houses in a game.
Play a continuous game for 24 hours.
Take more than 500 screenshots.
Spend 1 hour in Post Card view.
Play 2 hours in close camera perspective.
Play 10 hours in medium camera perspective.
Play 20 hours in distant camera perspective.
Pause the world 250 times.
Destroy 2500 enemy ships.
Accelerate the game for one hour.