@Harley Yes, SmileBASIC can connect to the internet, but only to upload and download projects from SmileBOOM's servers. A program in SmileBASIC has no access to the internet.
Yeah, curse words are probably the problem. I know of a game that was just called "Bullet ____" (The name of the genre itself) and it got removed. Just swap out any curse words with non-curse words. Basically, it comes down to copyrighted content and inappropriate content (Swear words included).
Sorry, but I couldn't resist doing something for April Fool's! Trust me, if it was possible, I'd love to make a spiritual successor to City Trial, but SmileBASIC just isn't powerful enough. We're just gonna have to wait for Nintendo to make a sequel... Any minute now. One day...
*sigh*
debug mode. You can probably just ignore the warning, I... I'm sure it will work fine. I'm thinking some of the debug features may help improve the game's stability a little bit, although it may *also* cause some different unexpected behavior. Hopefully if the Top Speeds overflow again it at least won't crash, but that shouldn't happen. Debug mode enables a few fail saves, anyways, so hopefully...
Well... There is one other thing you can try. Run the game, then exit with either START or SELECT. Go to the computer (The Create Programs with SmileBASIC button) and type "RUN" like you normally would to run a program, except instead of tapping enter or pressing a to execute the command, press and *hold* either START or SELECT. Keep holding it until you get a warning screen about activating...
This should fix most of your issues. Besides bug fixes though, I've also added a visual start so you know which direction you're headed, as well as an enemy player that follows you around. I have a bar graph showing how many Top Speeds you've collected, which is more akin to the original game. Enjoy!
Hold on, I think I know the problem. The has some gyroscope related features (Working on motion controls!) that aren't quite finished yet. Try holding your 3DS upside down, that should fix it. I have a strange habit of programming upside down, so I didn't realize holding the 3DS right side up would cause these bugs! (So much for being a good game tester...) So, until I can release the update...