We played a letter game back in the days for drinking shots and that kind of stuff. Here we used applications for it. 1 of my friends said that he wanted an application where the same letter can not be seen twice after eachother. 

So I tolled him that I would create it for him. This was like a 3 - 6 week project. 

He was happy with the end result and he used it evertime since it was online.