Level pages don't seem to load; whenever I try to look at one, it shows a black screen

First off, I assumed this was a one-off or odd cache bug but I am SO SORRY it took this long for me to check up on these. Got a job in IT and I haven't had as much free time anymore so I wanna apologize a thousand times. Fixed.

Ties in the sorting algorithm seem to be broken by random selection

Ties are now broken by in-game level id

Some levels have duplicate reviews

Unsure what causes this one. I will hunt to find duplicates and also what might cause it. By default the code that inserts a review into the database in a way that always edits instead if there is an existing one already so this may be similar to bug #1 where the same exact review appears twice across pages. Will check further and also let you report reviews with a general category for duplicates (even though again, it should not be possible for a user to have more than one review for a level, I will also enforce this in the database schema itself).

Scores of 0 are automatically shown as N/A

This was due to a 1 line bug due to JS interpreting 0 as false. N/A reviews are already represented in the database as "null"

Trying to create a playlist throws a 500 error

Was unable to reproduce this one even with no changed made. Can you try again?