These three here are my very first playtesters, Risky the Squirrel, Streak the Bobcat, & Sunny the Unicorn. Each one of them successfully navigated a test version of Green Hill Zone, and then as a team, tackled the Marble Zone and came out on top against a boss! I want to thank each of them heavily, for all the help and support they have been, and for all the feedback they've given me.
The system document itself is now in a state that I feel confident sharing with the public at large. If you'd like, take a look at Speedsters & Soapshoes yourself, and tell me what you think!