Very buggy, considering if you purchase certain amounts of an upgrade u die as soon as u click to start...

You actually have to pass through one extra to get the various unlocks. You have to pass 11 pipes to get the 'pass 10 pipes' unlock and etc, all the way through you have to pass 41 pipes to get the top medal of 'pass 40 pipes'.

This is a trivially-easy bug to fix. For an applied-mathematics game to have a glaring arithmetic bug like this? Well it doesn't look good.

Also it's very possible to buy your gravity or flying strength up/downgrades in such a way as to make the game literally impossible, and, especially early-on, if you messed up here you might not have enough money to fix it *and can't earn more due to impossible play*. The only solution if you mess up like this is clear out the cache, and start again from scratch.

Now it's possible this second point was intended, to be a sort of "lesson" not to spend willy-nilly without putting some thought into what you're doing, so I'll give it at least that benefit-of-the-doubt.

Also, as a tip for people playing this, it's not all about those "good" blue pipes. I actually got the 41 (yep you'll need 41 due to the arithmetic error) during a run with red pipes!

Just because blue pipes can decrease the default length of pipes and red pipes increase them doesn't mean a red pipes run is worse. In some cases the actual pipes themselves (without modifier) are actually further apart naturally, or closer together naturally, although in all cases they get smaller and smaller as you progress (but better starting conditions = better ending conditions).

If the laziness is covering you , you will never win awards at games!
You will find fun but award + lazy = never win!!!

hilarious

Flappy Bird clone, yep, but with other things to do !
I like the concept (2 stars), and I like the gravity system (1 star).
But, I don't think flappy bird is a good base to make a economical game, that really strange.
And, One more thing, when a reloaded the game, I lose my extra points and my flash player crash...
So, 2.5 stars, but without bugs, 3 stars.
Sorry for my bad english.