Flash Circle TD (thanks Sgt. Cilantro) - This link is terrible. It stinks. I hate it. Why? Because it ate up the last three hours of my night, which I should have been using to find an awful link.
Flash Circle TD is a Flash game (yes, really!) in which you build towers with various offensive abilities to fend off waves of increasingly difficult monsters who walk in circles through a maze, as monsters are wont to do. Figuring out a perfect build plan that maximizes each tower's effectiveness is a trial-and-error process, but it's definitely the good kind of trial-and-error.
Cons: causes bad nightmares. I used to have to eat beef until I passed out to have these kind of terrors, but this machine does it for me every time I fall asleep inside it.
Sorry about the blurry photo. I was lunging at my phone, yelling at it to take a clear picture. It's the only image of me that exists. I'd take another picture for you, but I'm in the middle of a rigorous trampoline session.
Awful Links of the Day spotlights the worst and weirdest websites on the internet. And we're not talking "weird" in a good way either.