Sure, here's a simplified version of the game you described. Please note that due to the nature of the platform, the game won't be an actual 3-D game but a text-based simulation with pictogram-like characters. You can copy the code below into a single HTML file and open it in your browser to play.
To play the game, open the HTML file in a browser on your smartphone. Use the spacebar to start the game and the up and down arrow keys or W and S keys to move the character. The goal is to avoid the obstacles and grab the power-ups to increase your score. The game will speed up as you progress, and it ends if you collide with an obstacle. Good luck!