browser-only puzzle field

games
puzzles
CFT

Local games, CTF-style challenges, and CFT riddles.

public areas

Only Play Surfaces Remain

Short browser games for pattern recognition, memory, encoding, packet reflexes, and binary fluency.

client-sidescores localno network

Capture-the-flag style puzzles with local state, filters, hints, and practice tooling inside the page.

cryptowebforensicsreverse

Boundary-to-bulk riddles inspired by conformal maps, dualities, and toy holographic puzzles.

riddlemathfield

CFT section

A small local puzzle. No answer is sent anywhere.

boundary trace: 2 3 5 8 13
bulk hint: add the previous two shadows
question: what number closes the next ring?

Enter the next value in the sequence.