BIS

1. What does BIS stand for?

Best in slot

Gamers use BIS to stand for "best in slot." You might encounter this acronym in gaming forums or in-game chat, when players are discussing equipable items such as armor, rings, shields, or weapons.

An item that is BIS is the best of its particular kind. Thus, it is the item a player should be looking to equip in that "slot." Which item is BIS may differ based on a character's level, class, and other attributes. So, for example, headgear that is BIS for one player may not even be usable by another.

Example

Those boots are by far BIS for a DPS
A Genshin Impact player who has acquired many BIS weapons
A Genshin Impact player who has acquired many BIS weapons

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Updated March 1, 2023
2. What Mario & Luigi video game does BIS stand for?

Mario & Luigi: Bowser’s Inside Story

BIS is a common shorthand for Mario & Luigi: Bowser’s Inside Story, a role-playing game (RPG) in the Mario & Luigi series released in 2009 for the Nintendo DS (NDS) console. Fans, speedrunners, and gaming communities often use this abbreviation when discussing the game in forums, social media, and video content.

The shorthand helps gamers quickly reference the title, especially since it is one of the longer-named entries in the series. It is particularly useful in online discussions about gameplay mechanics (e.g., controlling Bowser while also managing Mario and Luigi inside his body), strategies, and comparisons to other games in the franchise. Gamers also use "BIS" when talking about the 2018 Nintendo 3DS remake, Mario & Luigi: Bowser’s Inside Story + Bowser Jr.’s Journey.

Example

Have you ever played BIS? It’s probably my favorite Mario & Luigi game
Oh yeah, Bowser’s Inside Story! That game was amazing. Controlling Bowser was such a cool twist
Right? The giant Bowser battles were epic. I still think BIS has the best combat system in the series

BIS start screen

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Updated February 11, 2025

BIS definition by Slang.net

This page explains what the acronym "BIS" means. The various definitions, examples, and related terms listed above have been written and compiled by the Slang.net team.

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