About the Under Night In-Birth II recommender

What is WhichMain?

WhichMain is a Fighter recommendation tool I built to help players discover Fighters that match how they like to play in Under Night In-Birth II.

Recommendations are based on playstyle traits, roles, and gameplay patterns.

You can explore recommendations by browsing Fighters you enjoy, selecting gameplay tags, or comparing shared traits across the roster.

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Under Night In-Birth II Roles

The Under Night In-Birth II roster covers 8 distinct roles:

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Example Playstyle Tags

Fighters in Under Night In-Birth II are described using tags like these: each one represents a distinct playstyle tendency used to find similar fighters:

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Who Built This

I'm a solo developer and long-time player of competitive games. I built this tool to answer a question I kept running into across multiple games: "which fighter plays like the one I already enjoy?"

The tag profiles are built from direct play experience across each roster, not patch notes or scraped data. Tagging is done manually and updated as rosters change.

If a recommendation seems off or a tag description looks wrong, the contact page is the fastest way to flag it.

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Part of the WhichMain Network

This is one of 29 games in the WhichMain network, all run by one developer and all mapped in the same playstyle trait language - 1,403 characters described by 11,997 hand-assigned traits.

Because the games share that language, you can start from a main you already love in another game and translate it into Under Night In-Birth II. One account and one Premium work on every site in the network.

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