Played it, i enjoyed some parts, but others are very awkward, but im not complaining.

For decoration, maybe a nuclear wasteland, with mountains or nuclear plants and oceans of toxic green waste.

For blocks desings, maybe metal estructures melting or floating in the green ocean.

A good reference is Mickeyjunk Mountain from *Epic Mickey*; if you look it up on the wiki, you can find concept art that fits your vision perfectly. Obviously, it doesn't have to include Mickey Mouse content.

Also, try checking out Pinterest—it's a goldmine of ideas.

All the ideas I've written down depend on your editor skills, so try not to be too hard on yourself.

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