Code, known as Base 10 in North America and Decode in Japan, is a puzzle video game developed by Skip Ltd. and published by Nintendo for the Nintendo DSi's DSiWare digital distribution service.

[11] Pocket Gamer called it polished, hoping that future DSiWare games would be as good as this.

[12] They included it in their list of the best Nintendo DS games of 2009, stating that it was a standout of the Art Style series.

[13] However the game has been criticized for its lack of a left-handed option by Kotaku and GameZone.

[14][15] Nintendo World Report enjoyed the game, but noted that it is only good for right-handed players.