Sure! Here's an example of a game that meets your requirements:
Cosmetic 1
Cosmetic 2
Upgrade 1 (+2 score)
In this game, emojis will randomly fall from the top of the game container. The player needs to click on them to make them disappear and increase their score by one. There is also a shop section where the player can buy different cosmetics and upgrades (in this example, the items in the shop only trigger an alert message).
Please note that due to platform limitations, the game may not have the best performance on a smartphone browser. Consider using a dedicated game development framework for better results.