UD5 Toolkit
Logo Guessing Game - Online Identify Famous Brand Logos
See a cropped or simplified brand logo and guess the company. Hints available, score track. Local fun, no copyright infringement.
🖖 Rock Paper Scissors Lizard Spock
The Big Bang Theory game — now playable online against your computer.
0
You
0
Draws
0
Computer
VS
Make your move!
Scissors cuts Paper
Paper covers Rock
Rock crushes Lizard
Lizard poisons Spock
Spock smashes Scissors
Scissors decapitates Lizard
Lizard eats Paper
Paper disproves Spock
Spock vaporizes Rock
Rock crushes Scissors (as always).
Two more choices reduce the chance of a tie – it's a game of probability and mind‑reading.
Frequently Asked Questions
It's an extension of the classic Rock-Paper-Scissors game, popularized by The Big Bang Theory. It adds two more gestures (Lizard and Spock), reducing the chance of a tie and making the game more strategic.
Internet pioneer Sam Kass created it, but it became famous after Sheldon Cooper explained the rules on TV.
The computer picks randomly, so no strategy beats pure chance. However, in human-vs-human play, psychology matters – people tend to avoid repeating their last move. Practice here to learn the win/lose matrix!
With five equally likely choices, your chance to win, lose, or draw is 2:2:1. So you have a 40% chance to win, 40% to lose, and 20% to tie – better than classic RPS (33% tie).
This tool is a single‑player vs. computer game. For multiplayer, check out our party game version (coming soon).
Random Quarterly OKR - Online Corporate Fun
Create a random, aspirational quarterly objective with unrealistic key results. For meeting icebreakers.
Random Retro Cheat Code - Online Nostalgia
Generate a random sequence of button presses that looks like a retro game cheat code. Totally useless, totally fun.
Random Color Naming Challenge - Online Eye Test
See a random color and type its name. Score based on accuracy. Fun for designers. Local.
Palindrome Tester - Online Phrase Checker
Enter any phrase and instantly see if it's a palindrome, ignoring spaces and punctuation. Fun for word nerds.
Random Element Combination - Online Little Alchemy Style
Combine two random elements and get a surprising result. Inspired by Little Alchemy. Infinite ideas. All local.
Fancy Title Generator - Online Royal & Noble Names
Generate a grand, aristocratic title like 'Duke of Waffleshire'. Perfect for silly fun or RPG characters. Local.
Perfect Circle Drawing Challenge - Online Canvas Game
Try to draw a perfect circle freehand. Score based on roundness. Fun and addictive. No data sent.
Photo Age Progressor - Online Fun Aging Effect
Apply a simple aging effect to a portrait: add wrinkles and grey hair. Just for laughs. Canvas manipulation.
World Flag Quiz - Online Guess the Country by Flag
Random world flags shown; pick the correct country name from four choices. Score and streak. Learn geography.
Simon Says Color Game - Online Memory Challenge
Watch and repeat the growing sequence of colored buttons. How long is your memory? Classic electronic game replica.
Flexbox Froggy Simulator - Online Learn CSS Flexbox Game
A replica of the famous Flexbox Froggy game: solve alignment puzzles by writing CSS. Progress saved locally. Fun frontend learning.
Virtual Pet Tamagotchi - Online Feed & Play
Keep a virtual pet alive by feeding, playing, and cleaning. Its state persists in localStorage. Come back or it gets sad.
Scattergories List Generator - Online Categories & Letter Roll
Generate random Scattergories‑style lists with a random letter and 12 categories. Great for online game night.
Meme Soundboard - Online Play Classic Meme Sounds
Press buttons to play famous meme sound effects (Bruh, Wow, Sad trombone). For fun and streaming. All sounds embedded.
Impossible Quiz - Online Tricky Question Challenge
Answer a series of deliberately confusing and trick questions. Lives system and funny wrong answers. Playful, no data stored.
Gradient Match Game - Online Drag & Match Linear CSS
Recreate the target CSS linear gradient by adjusting stops and colors. A unique game for front‑end developers to master gradients.
Pong Game - Online Classic Two‑Player Arcade
The original arcade Pong recreated in HTML5. Play against AI or local two‑player. Score up to 11 and win. Pure retro fun.
Memory Sequence Game - Online Watch & Repeat Colors
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Rock Paper Scissors - Online Best of 3 & Score Tracker
Play Rock Paper Scissors against a smart random CPU with win/loss/draw tracking. Smooth CSS animations. No ads, pure fun.
Palindrome Checker - Online Test Words & Sentences
Check if a word or phrase is a palindrome (reads same forward and backward). Live validation and fun facts.
Simon Says Game - Online Memory Sequence Challenge
Repeat the growing color sequence. How far can you go? Classic memory game with sound and animations.
Lunar Lander Simulator - Online Retro Thrust Game
Control a lunar module and try to land softly on the moon. Manage fuel and thrust. Classic arcade physics. Canvas.
Time Machine Clock - Online Past & Future Time Viewer
Set a date in the far future or past and see a mock clock with impossible times. Purely for fun.
Tetris Game - Online Classic Block Puzzle
Enjoy classic Tetris in your browser. Rotate, move, and drop tetrominoes. Clear lines and score. Fully local JavaScript.
Text to Mountain Emoji Art - Online Landscape Maker
Turn your message into a scenic mountain emoji art panel. Choose different landscapes. Copy and paste anywhere.
Online Scratch Card - Virtual Reveal & Surprise Message
Create a virtual scratch card with a hidden message or prize. Send the link; recipient scratchs with mouse/touch. Canvas-based.
Leet Speak Translator - Online 1337 Text Converter
Convert plain text into leet (1337) speak and decode it back. Great for gamer tags and online culture. Fun, free, and local.
Text to Emoji Translator - Online Convert Script to Picture
Translate alphabetic text into corresponding emojis (A → 🅰️ etc.). A playful way to send messages. Purely frontend, no data collected.
Meme Generator - Online Create Custom Memes Without Watermark
Add top and bottom text to images and create classic memes. Upload your own image or use templates. Download your creation without watermarks. Purely client-side.