The best places to grab serious chunks of change are at the beginning of the "burrowing" sections of the game. Here you'll find pictograms built out of coins - steer your ship in very wide left and right bursts to grab as many of these free coins as possible.
Complete the missions to get bonus gold at the end of your run.
It always helps to swerve in on an angle to catch different coins.
When on the rail tracks and picking up coins – when you see that the track is about to end or there is a triangle sign with a “!” you must slide over to a track that has more rails.
The purple object that floats around will help you shoot all objects in front of you except for massive boulders.
After each run, you’ll be given an opportunity to chip away at a big gold mountain. Use as many fingers as possible and tap as fast as you can.
When you have reached a point that all your links to your drill have been caught off and you’ve basically lost your last one – a bright, gold circle will appear immediately. Keep in mind it disappears quickly.
When you’re being chased by that enormous worm that suddenly appears–out of nowhere–at the top of your screen, it’s important that you collect as many of those downward pointing arrows. Gathering those will give you a boost, and help you run pass the worm.