Please read before you head out! 
What's an intercache?
An InterCache is an interactive geocache. An intercache is a new way of creating a mystery geocache, similar to a wherigo geocache. The biggest difference is that the entire geocache can be developed, edited, and played on your mobile phone's browser with no software required to download!
How do you play?
First, make sure you have a compatible device. Go to http://www.intercaching.com on your cell phone and select the test button. I recommend doing this outside for best results. You should see your current coordinates as well as the estimated accuracy. If you see something reasonable, you'll all set! If you get an error, you may need to enable the GPS and other geolocation settings on your phone. You may also not have a compatible phone.
Play
If your device is compatible, then head on over to the intercache page on your phone and start. At each of the stages you will be given coordinates, though you shouldn't actually need them. There is a compass that has a red arrow pointing you the right direction as you move. You may have to walk a little bit before the arrow points in the right direction as this application doesn't have access to your phone's digital compass if it has one.
At each stage you will be asked a question, and you must answer it correctly and be within 25 feet of the destination in order to move on.
Notes
- This is a new way of looking for a geocache. I haven't extensively tested this yet, so you may encounter some problems.
- I recommend that you do NOT leave the browser during play. At minimum, don't open a new web page. I successfully switched apps while playing/testing it, but if you close the browser window, you may have to start over.
- It's safe to let your screen timeout while walking. When the screen times out, your GPS *should* go off and not waste battery. When you turn your phone screen back on, it might take a few seconds for the app to get your coordinates again.
Making your own intercache
If you're interested in making your own, please go ahead and try. But let me know as I'm still making changes and updates, and might break something you have done.