Finally, I’m part of the 99 coins club.
I did not found this game until last year and on my phone I could only get 7 or 8 coins, but on a PC thanks the keyboard this is way easier, still the game is pretty unforgiving as a single mistake makes you to start all over, still it was fun.
For those that may still like to see if they can get 99 coins I can give the next tips.
Forget about the coins, you can always get more as long as you do not crash, concentrate on surviving.
Concentrate on the upcoming floor pipe.
The pipes have two sections, the thinnest and the widest one, most of your clicks or keystrokes should be around the approximate height in which those two sections join on the next floor pipe.
If you feel like you are too close to the floor pipe and you are about to crash then try to delay your click or keystroke until you are closer to the ground, this will make the bird to fly for a longer distance and create space between the bird and the floor pipe, while at the same time it will improve your angle and diminish the chances of crashing with the sky pipe.
If you feel like you are too far away from the floor pipe then give your click or keystroke a little bit earlier, this will make the bird to fly for a shorter distance and shorten the distance between the bird and the floor pipe.
Grind.
Getting 30 to 60 coins with this strategy is easy but getting 99 coins will require that you grind a little bit.