Tip: Use #ExprOn (that's normally the ExprOn token) anywhere before Horizontal+/- in your program and it becomes pretty much just as fast as Vertical+/-, at the cost of a 28-byte larger, speed-optimized routine. A few other routines have speed-optimized versions and also get speed benefits (with size costs) from #ExprOn, including ►Hex, DrawInv, and multiplication, and additionally Pt-On(), Pt-Change(), and Pt-And() if not compiling your code as an application.

If you want to speed it up even more, shift in more than one pixel per new frame. Each additional pixel shifted and redrawing of the tunnel will of course make each frame take longer to render and thus decrease the framerate, but you might be able to get away with a couple extra shifts per frame without noticeable choppiness.

They are, and it was surprisingly easier to program than many other things I've made!

It depends with which language, though. With xLIBC it's even harder than a tilemap (due to the whole screen shifting looping issue).

Anyway this is a good start, plus you have it scroll at 1 pixel interval.

Whenever I upload it to the download section it always says that the file can not be found, and I always select the file. Why doesn't it work? What am I doing wrong  
I eventually just included a link to my other website...
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=868
EDIT1: OH, do I have to fill out the upload url in addition to choosing the file?
EDIT2: I found a way to put the download link from my own site so it works normally... It's still weird that the regular choose file button didn't work.

(oh and sorry I replied twice in a row, I didn't notice)

Totally! I must've edited the darn thing like 20 times trying to get choose file to work 

Hmmm, you wouldn't perhaps mind if I ported this to the TI-Nspire, would you?

Of course you can this particular game wasn't very hard to code so I made it completely open source.

Haha, it's getting serious now   I'm getting a color ti soon, I can't wait to try it out!

I think Ndless. I like its speed over lua, as lua in interpreted rather then native. I might make a lua program in the future. I almost have it done pretty much too!