Bot Grenades were introduced to Fortnite with the 11.31 update, in conjunction with the Battle Lab game mode. The Battle Lab allows players to set up custom games where they control things like gravity, fall damage, and can choose loot sets from pre-existing LTM modes. It will allow you to modify various elements of the game according to your own needs. You can set up the games and play them with friends, or you can load into matchmaking activities with strangers.
Bot Grenades are an item available in the Battle Lab. When a player throws the grenade, it spawns an AI-controlled bot. They are not weapons but primarily act as a way for players to test out specific functions in their Battle Lab.
Unfortunately, Bot Grenades didn't last long in-game, and an update on the Epic Games Trello board informed players that an issue needed to be investigated, and Bot Grenades were disabled in-game.
Bot Grenades are certainly an exciting addition to the game, and folks who love Battle Labs certainly seem eager to bring them back. There are also requests for Bot Grenades to be added to the game's Creative mode.
We'll update this guide when the Bot Grenades are added to the game and talk about some areas you can test with them, as soon as we can reuse them in the game.
