I consistently love Neal Agarwal’s web games, but he’s outdone himself this time. In Stimulation Clicker, you just click the button — and the more you click the button, the more stimulants you unlock.

What’s a banana worth? A diamond banana may be worth $70 or $165, depending on the day. The gentleman banana — a banana with a hat and dress shoes — is less than a dollar. The pickle banana, which is ...