Sure, here's a sample implementation of a simple mobile cookie-clicker game using JavaScript and HTML.
Money: $0
Upgrade: Cost $10
In this game, you simply need to click on the cookie to earn money. Each click earns the amount equal to the current upgrade level. You can also purchase upgrades by clicking on the upgrade cost, which increases the upgrade level and the cost for the next upgrade.
Please note that the provided code assumes the availability of `emozi_all/cookie.png` as the image file for the cookie. You will need to replace this with your desired cookie image or use appropriate pictograms.