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Dots and Boxes on a 6×6 dot grid: claim a line, close a box, draw again, and outdraw the Pencil.

Pack every shape with no gaps or overlap.

Rotate every arc until the circle is seamless.

A fast, playful riddle duel.

An endless dungeon you walk around, and it remembers its dead. Your corpse stays down there for everyone else.

A field dossier that refuses to name your mushroom — it gets the irreversible evidence out of the ground intact and writes the ID request an identifier can answer.

A one-button flight through a voxel world.

A hi-fi Minecraft brewing sim — three very silly villagers, a basin of lava, and every real recipe in the game.

27 skill domains, 81 app concepts, two hostile skeptics each. Seventeen survived the question: why not just ask an LLM?

Route every cable without a single crossing.

Flip plank tiles and pair up ores, ingots and gems.

Dodge a mean teacher's insults and keep Xiao Ming's self-esteem in one piece.

One hour, one level refresh. Everybody builds the same one.

A razor-sharp one-button swing through a webbed city skyline.

Sixty advanced days of microtime, clavinet language, voicing economy and deep keyboard pocket.

Battlefield-style architecture maps for Steam-scale gaming and Vercel-scale frontend cloud systems.

A climbing force gauge that streams to your browser, and a grip ledger whose staleness scheduler decides what you pull today.

Drag vectors, points and planes in 3D and watch every formula recompute live — the geometry behind graphics, game-engine and robotics interv

A tiny flat Reversi on a 6x6 flower bed. Flank the moss, flip the bed, bloom in ten beds or today's daily match.

Four planets, 12 primary school math issues, turn each calculation into an adventure.

A compact starlit particle field shaped like Jing Luo.

Rebuild the pattern as a flawless reflection.

Tilt your phone to keep the ball on the paddle — don't let it drop.

A dark-adapted f-stop enlarger timer first — the dodge and burn you record in stops re-derive themselves for a new size, paper or head height.