DDEF Studios

Title 01 — Closed testing

Twenty-one puzzles.
Every day. Fresh.

Foldout generates a new set on your phone each morning — the same set for every player, no account, no network, no ads.

Today
Today’s fold
Streak 14 3 / 21 solved

Five of the twenty-one

Word

Ladders, anagrams and fill-ins built from openly-licensed word lists.

Logic grid

Deduction puzzles with exactly one solution, verified before you see them.

Chess tactic

Solver-checked positions with a single winning line. No engine needed.

Strategy

Classics of the genre, reduced to a five-minute daily instance.

Numbers

Arithmetic and placement puzzles generated fresh each morning.

Title 02 — In development

Daily Tactics

One solver-verified chess tactic a day, generated on your device — a streak, a spoiler-free share card, and nothing else asking for your attention.

About Daily Tactics →

Press & contact

Talk to the developer

Review builds, screenshots and answers, usually the same day.