Keyboard Rollover Tester

Generate random nicknames that fit MapleStory.

Generate random nicknames that fit League of Legends.

Generate random nicknames that fit FIFA / FC.

Generate random nicknames that fit PUBG.

Generate random nicknames that fit Valorant.

Generate random nicknames that fit Lost Ark.

Generate random nicknames that fit Overwatch.

Generate random nicknames that fit MapleLand.

Decorate your nickname with symbols like ✿ ★ ꧁꧂ — perfect for game profiles.

Turn your nickname into 𝓯𝓪𝓷𝓬𝔂, 𝕓𝕠𝕝𝕕 Unicode fonts that work in some games and social apps.

Flip your text upside down, like ʞɔlɐ — for unique nicknames and profiles.

Suggest aesthetic nicknames by mood (cute, cool, chic) in Korean, English, or Japanese.

Generate epic names for your guild, clan, or party.

Find the chance of at least one hit over N pulls, and how many pulls you need for a target.

Given X pulls left until pity, compute the chance to hit it before pity.

From success chance and attempts, get the success probability and expected tries.

Enter a chance and per-try cost to get the average number of tries and total cost.

Click appearing targets fast to measure your aim reaction time and accuracy.

Click as fast as possible to measure your clicks per second (CPS).

Measure your actions per minute (APM) live from clicks and key presses — for RTS players.

Detect mouse chatter (one click registering twice) to check if the switch is worn out.

Move your mouse to measure its report rate (polling rate) in Hz.

Randomly pick winners from a list of viewer names — perfect for stream giveaways.

A spinner wheel for streams — pick a game, a penalty, or anything. Add your own options.

Enter players (name:rating) and split them into balanced teams — great for custom games.

Randomly pick today's game to play or stream from your list.