jkoch.io
Mobile Web Experiments
Wheel of Doom
RNG Elimination Survival. Enter names, spin the wheel, survive the cut.
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Neon Gravity Dice
Physics-based dice roller with Matter.js. Roll D4 to D20 and watch them tumble.
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Neon Plinko
Drop the ball through physics pegs. Adjustable levels, multiplier scoring zones.
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The Oracle
Mystical fortune teller. Enter your name and discover what the spirits reveal about your soul.
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Math Siege
3D math shooter! Answer questions to fire cannonballs and destroy the castle. 3rd grade math.
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