As of today, only Vanilla (Unmodded) or Pudding Mod (Visual changes only) will be accepted. Any mods that change fundamental game-play aspects (including Level Editor, More Menu, Mouse and Dice Mods) will not be accepted - even if you weren't using the mod's features. When/If more mods are added in the feature, the general rule would be that "harmless" visual changes are allowed, and game-play changes are not.
That being said, you should still check out the mods and have some fun with them! https://github.com/DarkSnakeGang/GoogleSnakeModLoader/blob/main/README.md
From now on the ingame timer, aqcuired by pressing t, is required for all runs. This includes speedrun and highscore runs. Your run will no longer be verified if the video only has audio.