Hangman Word Game - Online Guess the Hidden Word
Classic Hangman with random English words. Visual hangman drawing, keyboard support. Guess letters and save the stickman. Completely local.
UD5 Toolkit
Guess the chemical symbol
Classic Hangman with random English words. Visual hangman drawing, keyboard support. Guess letters and save the stickman. Completely local.
See a cropped or simplified brand logo and guess the company. Hints available, score track. Local fun, no copyright infringement.
Rotate and view the 3D shapes of s, p, d, and f orbitals. Great for teaching quantum mechanics. WebGL‑based.
Generate a random sequence of button presses that looks like a retro game cheat code. Totally useless, totally fun.
See a random color and type its name. Score based on accuracy. Fun for designers. Local.
Combine two random elements and get a surprising result. Inspired by Little Alchemy. Infinite ideas. All local.
Select bonding and lone pairs to see the predicted shape (trigonal bipyramidal, octahedral). Static diagrams.
Select functional groups to see an approximate IR absorption spectrum. Learn spectroscopy visually. All local.
Try to draw a perfect circle freehand. Score based on roundness. Fun and addictive. No data sent.
Random world flags shown; pick the correct country name from four choices. Score and streak. Learn geography.
Watch and repeat the growing sequence of colored buttons. How long is your memory? Classic electronic game replica.
Play the extended 5‑gesture version against a CPU. Rules explained. Score tracking. A geek classic.
A replica of the famous Flexbox Froggy game: solve alignment puzzles by writing CSS. Progress saved locally. Fun frontend learning.
Keep a virtual pet alive by feeding, playing, and cleaning. Its state persists in localStorage. Come back or it gets sad.
Generate random Scattergories‑style lists with a random letter and 12 categories. Great for online game night.
See all elements sorted alphabetically by symbol. Picture and atomic weight. Beautifully styled static list.
Find safe mixing ratios for the classic elephant toothpaste demonstration. Volume adjustments for different container sizes.
Click a metal ion to see the characteristic flame color and wavelength. Useful for analytical chemistry reference.
Drag a slider along the pH scale to see examples of solutions at that pH and the concentration of H⁺ and OH⁻ ions.
Recreate the target CSS linear gradient by adjusting stops and colors. A unique game for front‑end developers to master gradients.
Play the Pig dice game: roll to accumulate points, but a 1 ends your turn. First to 100 wins. Simple hot‑seat local game.
The original arcade Pong recreated in HTML5. Play against AI or local two‑player. Score up to 11 and win. Pure retro fun.
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Play Rock Paper Scissors against a smart random CPU with win/loss/draw tracking. Smooth CSS animations. No ads, pure fun.
Repeat the growing color sequence. How far can you go? Classic memory game with sound and animations.
Control a lunar module and try to land softly on the moon. Manage fuel and thrust. Classic arcade physics. Canvas.
Enjoy classic Tetris in your browser. Rotate, move, and drop tetrominoes. Clear lines and score. Fully local JavaScript.
Get the full electron configuration and orbital box diagram for any element. Learn the Aufbau principle. Fast and local.
Enter an unbalanced chemical equation and get the balanced coefficients instantly. Supports parentheses and ions. All local JavaScript algebra.
Browse a beautifully designed periodic table with electron shell visualization and key facts. Click any element to learn more. Offline ready.