Arrow Keys - Move Z - Jump, Spin Dash, Peel Out X - Drop Dash C - Ring Launch (Costs 1 Ring To Use) S - Stomp D - Jump Attack & Run Cancel F - Jump Cancel 9 - Toggle dev tool (debug mode) You can use the dev tool to experiment with different effects. Dev Tools: 4: spawn ring above sonic 3 & 0: Toggles 2.5D 1 & 2 to change Sonic's size & SPACE to turn him back to normal 6: set shading to 0 7: set shading style to sharp/Hahasamian 8: set shading style to smooth/apgonscratch 5: set a "shader intensity number" (higher is darker, lower is brighter) 9: Toggle developer tool (Use Z to scroll through items, X to place items)
v1.4 adds volume sliders to the menu and a more debug-mode-esque developer tool. More bug fixes as well.