Agent Caesar

Agent Caesar dresses a Caesar cipher puzzle in a spy story. Each day brings a numbered casefile: a short briefing from a field station and an intercepted message that reads as noise. Your job is to decrypt it, and the plain text is a sentence of agency chatter such as orders to hold a position.

The tools are cipher blocks. Each block shifts letters through the alphabet by a set amount, forwards or backwards, and covers a set number of characters, shown as large segments of five and small segments of one. You drag blocks onto the track over the message. Up to two blocks can overlap, and some positions need both to come out right. A letter that is correctly decrypted fills green, which is how you learn where a block belongs.

A Case Notes tool lets you test any shift on the day's text with a rotating wheel, so you can look for words hiding in the static before committing a block. The next casefile arrives at 8 AM Eastern, older ones are declassified in the archive, and you can sign up to receive each day's casefile name. The game is free and ad-free, supported by optional memberships, and comes from the same small studio as Zaggle and Wordsmyth.

It suits players who like codes and ciphers, and logic fans who want a word-shaped puzzle that is more about placement than vocabulary.