RooBY

by NonprofitProphet · Games

Manifest V3 Free

View in Chrome Web Store Data as of 12 Nov 2026

Adds calculators and extra functionality to Generation 1 Pokemon Showdown

Users

−4 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#85K

#76K among extensions

Version

1.2.0

updated 20 Jan 2025

Users

monthly, 3 years

Latest, 12 Nov 2026: 80 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 12 Nov 2026: 2 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About RooBY

What is RooBY?? RooBY is a: * Moveset distribution calculator * Damage calculator integration * A remaining type percentage calculator * A calculator for other miscellaneous things (Recovery move failure, crit rates, confusion damage) * A Showdown UI themeing tool * A tracker/calculator for Elo and individual win records * An extra ladder for Gen 1 mods * A "Transform" button add-on for the official Showdown calculator RooBY also adds extra commands: * /unrevealed, to calculate the odds of remaining Pokemon/types/dual types for random battles * /movesets, to show the moveset percentages for individual random battle Pokemon * /moves, to show the move percentages for individual random battle Pokemon * /export, to allow you to quickly copy your current battle into the official Showdown calculator Report a bug: https://forms.gle/CpfcpSGuoNAQASBP6