Guide not written yet. We add one after we've played the game. For now, this is the developer's own description.
About Cerkio
Cerkio invites you into a minimalist world where precision meets relaxation. Test your timing as you launch a ball into a target across 30 increasingly complex levels. With soothing music and intuitive one-touch controls, experience a challenging yet calming escape. Perfect your skills and master one-hand gameplay.
Description supplied by the developer via GamePix.