Codebreaker

Codebreaker is a fairly simple game, centered around making and breaking codes, memorizing sequences, decoding binary numbers, transmissting and receiving morse code and… well, it’s a game created to challange your mind. If you’re into action games, shooters, RPGs or platformers, this is not for you. If you think you’re smart and you are not afraid to put yourself to the test, well, than you might actually enjoy it.

https://store.steampowered.com/app/1132460/Codebreaker/