Needs: 1 fix control responsiveness 2 STOP blocking view of track with obstacles and text 3 let us unlock characters from earlier/foreign versions of this app, such Pac-Man and maybe Sanrio characters 4 make blue gems useful again; allow exchange for coins, etc. Still one of the better mobile games, but that's not saying much. DO NOT let the ads in top right of the level select screen trick you into downloading Sonic Forces mobile Speed Battle, which is HEAVILY rigged against honest F2Ps !!