Well, it _definitely_ speeds up! The costs don't rise very quickly, and once you get to square, very quickly you can buy another after a few seconds. Then one every other second. Then one every second, etc. I'm now getting 4 or 5 every second. Will it reach a point where I can't even click fast enough to spend all the money in a second before even more is generated? (Yes, it happened around the mid-700 squares)
It wasn't initially clear to me that the different shapes are worth a different amount when clicked. What is the click value based on? It's not the same as what that shape earns per second.