√ = will be fixed in the next update
△ = will be fixed in a few updates
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√ Music/SFX options
√ Storages: We plan to remake this part, too. Choose what to keep and show capacity sounds necessary.
√ 5&6: Sounds cool. We'll see if the difficulty option works out first.
√ Mouse: We'll look into it.
△ Visualization of the stairs: We used to have a filter mode, where you can filter what levels you want to see. But it had lots of problems and we'll try to fix in 1~2 updates.
△ More BGM and SFX: It's necessary, but currently, we can't put too much effort on it.