Instructions are in game. Following is an update log: early version (replace "," with ".") to convert this sb3 to sb2, go to python,org, click download, and install python. Then go to github,com/RexScratch/sb3tosb2 download the ,py file. finally, open the file in python and select this sb3 Version 1.3 (10th September, 2015) - Sonic can enter rolling a tad earlier and ends rolling a tad later Version 1.2 (6th September, 2015) - Spindash added - Improved ground collision to detect very thin platforms - Improved launching jump collision - Fixed low speed horizontal rotation animation bug - Fixed static animation bug Version 1.1 (5th September, 2015) - Slightly extended level map to test more extreme inclines - Fixed jumping animation bug - Faded, resetting start screen Version 1.0 (31st August, 2015) - Project released