Marble Blast Gold

Adjust gold time in any level:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Go to the Marble Blast Gold app. Right Click or hold [Ctrl] on it, then choose "Show Package Contents". Go to "marble/data/missions/" and Right Click the mission that you want to adjust. Note: The mission does not always have the same name. Then choose "Open" and select a text editor such as "Textedit". Search for the line "goldTime = <number>;" and change the number to the desired time, but the last digit must be zero, and the two numbers before it are the value for one-hundredth seconds. The two numbers before that set are the seconds. The two numbers before that set are the minutes, etc.
Information in this section was contributed by merlinoboy.

Level select:
Go to level selection screen and click to the next level that is locked. Then, go down and click on the bottom right corner of the screen on the picture. It then will unlock that level. Continue this process until you have unlocked all levels. Note: This does not unlock "Custom". You must complete all levels to unlock "Custom".
Information in this section was contributed by SpiderMan73087.

Hint: Beginners level 24:
On level 24 of Beginners level, you can substitute the Gyropractor (which is tricky to work), and instead use a "super bounce" to reach he tower with gems. The location of all gems for this level are:

Two on main platform.
One in mine tunnel.
One on super bounce platform.
One on Gravitron pathway.
One on Gyropractor towers.
One where super bounce towers are (be careful, you easily fall off here).
One on moving platform that moves horizontally,

Also, be careful during the drop to the ending circle-platform. You are supposed to use a shock absorber there and people easily mistake it as just a regular drop.
Information in this section was contributed by Natasha Bonfield.

After you have collected all the gems, use the Gyrocopter to float down to the finish. Use it rather than the Shock Absorber. It is much easier.
Information in this section was contributed by Shortymaster4.