The game is similar to “Plates of Fate”, so I’d like to leave the in-game area relatively open for the events to happen, but without it looking too plain. The theme is supposed to be underground, or cave like.
I’ve personally never played plates of fate, but what I can say is maybe make the surrounding area more smaller? If anything, you can also add in some mist in the lighting settings. And, maybe don’t copy the Minecraft grass texture.
you could try making it so below the platforms its like a ocean and the Islands could look like floating islands with rocks under them or even on clouds, for around it you could make a glass cage which the game is held in with around the cage there being a bund of lobby stuff?
I added a roof, made spikes have size variation, made a new lava texture, and added a slight ledge to the bottom border of the map. I didnt make the outside part smaller because I kind of need the space, and I think the open-ness looks pretty cool in game