Sure! Here's a simple implementation of a Ghost Hunting Simulator game with achievements, upgrades, and harder enemies, all within a single HTML file. The game is designed for smartphone operation and uses pictograms to represent the ghosts. Please note that this is a basic example and can be further enhanced with additional features and graphics.
Ghost Hunting Simulator
Achievements
Upgrades
In this game, the player is required to click on the ghost pictogram to score points. The score is displayed on the screen, along with achievements that unlock as the player reaches certain score milestones. The player can also upgrade their Ghost Blaster to increase their score per click.
You can save the code as an HTML file and open it in a web browser to play the game.