The Dirty Little Secret Of Overnight Successes | Fast Company
"Angry Birds, the incredibly popular game, was software maker Rovio’s 52nd attempt. They spent eight years and nearly went bankrupt before finally creating their massive hit.
The ubiquitous WD-40 lubricant got its name because the first 39 experiments failed.
WD-40 literally stands for “Water Displacement--40th Attempt.”
In depth: How Rovio made Angry Birds a winner (and what's next) @ Wired