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Sumo Support

Are you a user of Sumo! for iPhone? Having problems? Yeah? Well, you came to the right place!

Technical Support by Email

Our technical support team uses a web-based system to track support requests. If you need technical support for Sumo!, please submit a support request via email using this link: You can follow the progress of your support request by logging in here.

Note to TubeSock users: this is a different technical support email address than the one we use for you. Different systems for different programs. Please don't cross the streams.

Sumo! for iPhone

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Current Version

The current version is 1.0.1. Please check the App Store for the update! As of now, there is no other way for us to send you an update.

Sumo! 1.0 was released on July 12, 2008.
Sumo! 1.0.1 was released on July 15, 2008. Among the bugs fixed:

What is Sumo?

Sumo! is a fast-moving game of strategy we originally created as a Shockwave game in 1997. It was featured in Wired magazine and had millions of players for both its single-player and multiplayer versions. We later made a half-assed version for the Palm OS. For its tenth birthday, we dug it up, dusted it off, rewrote it in Objective-C, prettied it up, and now we're selling it on the App Store!

Free updates for registered users! We're up to version 1.0.1 now. Check the App Store icon for your update!

Want Sumo! for the web or Palm? The Shockwave game can be played here, and there is a downloadable version for Palm OS here.