If you need help with a terrain, put a variable (seed) and randomize it from zero to 10,000, and make a rule with divided perlin noise (which in this case will be between 8 and 20),BEFORE that, multiply it by 10 or so,(at the y position of an actor that creates a block)

I think i know what would be cool for next update If you didnt add hostile mobs, that would be cool And some starting menu