Here's an implementation of the Slime Defense game using HTML and JavaScript:
This implementation creates a simple game where green emoji slimes try to reach your emoji gem. You have a starting normal toy gun (`🔫`) that shoots projectiles to kill the slimes. Each slime has 5 health, and when you kill a slime, you earn 5 points.
You can use these points to upgrade your gun. There are 3 choices for gun upgrades: laser gun (`🔫🔴`) for 5 points, the purple skull gun (`🔫☪️`) for 10 points, and the destroyer gun (`🔫🚨🚨`) for 60 points. Each upgrade makes your gun stronger.
You can control the game using spacebar to shoot projectiles. The game is designed for smartphone operation, although you can also play it using a computer browser.