Sonic Golf Cmode Cup (ソニックゴルフ Cmodeカップ Sonikkugorufu Cmode kappu?) is a mobile phone game released as part of a joint event between Sega with Coca-Cola Japan for the Sonic Cafe service in 2002. It is based on the original Sonic Golf.
The game was first available on 9 September 2002 at Sonic Cafe. To play the game, it was necessary to install the Club Cmode app. The first event ended on 8 October 2002. On 25 November 2002, a second event was held before the game became unavailable on 25 December 2002.
The player plays half a round, or nine holes, of golf. The score for the hole and the overall score is shown after completing a hole. The final score of the round could be shared on the Sonic Cafe leaderboards.
The in-game score results in Cmode points, each point being worth 1¥, at the maximum score of 1000 points. It was possible to exchange the Cmode points for a free beverage from Cmode Coca-Cola vending machines.