Sure, here is a simple implementation of an endless open world RPG of space exploration game using HTML, JavaScript, and pictograms:
Space Exploration RPG
This implementation creates a simple game area with pictograms representing the game world. The player can control their spaceship using the directional buttons and navigate through the space exploration RPG. The game world is represented by a 2D array where different pictograms represent different entities in the game.
Feel free to enhance and customize this game further according to your preferences!