Forum modding, also known as Modding v1, is a colloquial name of the forum-based modding and ranking system that was mainly used until November 4, 2017, when all new and inactive beatmaps were switched to beatmap discussions by default.
In the forum modding system, every beatmap had a forum thread for communication and logging of the ranking procedure.
A forum thread was created for a beatmap during its initial submission and contained free-form comments, guest difficulty interactions, and structured feedback in form of mod posts. It served as the main hub for discussion between all users interested in the beatmap: regular players, the beatmap host, guest mappers, modders, and members of these beatmap ranking teams:
A forum thread was automatically moved between different forum sections loosely tied to the beatmap categories:
Main article: Star priority
In every subforum, beatmap threads were sorted by their star priority, which had several purposes:
The beatmap's progress in the ranking procedure was shown through posts made by members of beatmap ranking teams. Each post had a custom icon, which would also change the forum thread's icon to reflect its status:
An example of a mod post that was awarded with a kudosu
Unlike in beatmap discussions, a typical forum mod post covered the whole beatmap and could contain a lot of content. While users were free to express their thoughts in any form they wished, the majority of modders adhered to a specific structure to make their posts more readable:
The modern review system was created to mimic forum modding in beatmap discussions.
An example of a response to a mod
While not required, mappers were expected to reply to every mod received. A reply typically contained a quote of the original post, where every suggestion was followed by a mapper's response. As with mod posts, many mappers used two or more font colours to convey their responses and help distinguish between accepted and rejected suggestions.
Main article: Kudosu
If a mod post was deemed useful, the mapper or a member of the QAT/BAT/BN could award it with kudosu. According to an unwritten rule, only a user's first mod post was eligible to gain kudosu. Regardless of how many suggestions were in a post or how useful it was to the mapper, the amount of kudosu received was consistent:
Kudosu served as an activity metric for modders. Most users spent their accumulated kudosu to increase star priority of the maps they liked or wanted to promote.
In the forum-based modding system, a lot of actions were manual, which often led to mistakes. Examples:
The changes required to address most common issues were initiated on April 26, 2013, when peppy presented the idea of the new modding system (later known as Modding v2). On August 21, 2014, a new category, Qualified, was added. Qualified would serve as a buffer between pending and ranked beatmaps and allow for more smooth unranks. In addition to that, a new team, Quality Assurance Team (QAT), was assembled to check qualified beatmaps and control the ranking process.
Afterwards, the beatmap discussion system and the code of conduct for modding and mapping were developed and made available to restructure modding and make it a more enjoyable experience for everyone involved: