Ok so as you could read in one of my post lately, I've been trying to do some sort of platformer engine. I failed epically after two attempts, after both of which I lowered my standards for the project, making something more simple, in terms of backend coding. I still managed to make it run fast in 6 MHz and make my engine rather dynamic.

Basically, in this game, in each levels, which are randomized, based on pre-defined settings (allowing each level to only take around 15 bytes), you must control a ball in some sort of tunnel until the end of the "map" (which is, in fact, just data for the floor and the ceiling, meaning each level, despite being 300 x 240 ish tiles approximately, depending of the randomizing, will only take around 700 bytes of storage into L1). In the future, you'll need to get out of the map before time runs out (a counter will display at the bottom of the screen) to finish, else it's Game Over. Your final score will depend of the time remaining. Some levels randomizing settings will be very hard, because the ball bounces on walls and when walls are really close, you bounce everywhere, making the ball hard to control. You also move extremly fast.

I will need to figure out a name for this, though.

There is parralax scrolling and tiles can be animated.  The game engine allows me to decide the speed of animations. The walls can be animated too. I have some screenshots below (sorry for the small images and slow framerate, but for some reasons, Wabbitemu produced insanely large GIF files at better quality settings). The sky is actually 4 different tiles making a scrolling effect). It looks much better and smoother in the emu or on calc (and this runs at 6 MHz, btw):

EDIT: I added a new screenshot at highest quality, showing walls being animated through some current tiles and the background scrolling vertically. It's a short GIF, though.

(Note: this is not for a contest)

Wow, that looks really nice (love the independent background (though it seems to be a bit of ) (never mind, my mistake) and the jump looks realistic). Ever thought of naming it ParallAxe (I'm assuming it's in Axe, and yes, that's how you spell "parallax" -- one "r", two "l"s)?

EDIT: Not sure about this, but wouldn't black-and-white screenshots take up a lot less space?

That looks epic.  In an epic way.  Holy crap.
On a side note, you could name it SpeedBall.  Simple.  Also, have you considered adding obstacles?  Dodging swinging blades in that game sounds like fun

This looks like it could be the next fast tunnel!
Seriously, this game looks and sounds like it would extremely addicting and fun to play. Keep up the good work, I definitely would love to see this finished.

wow! that looks epic DJ! can't wait to play it!
I like the enemies idea as well

Thanks. Right now I am adding a few more sprites (some that are animated. My engine has slots for 32 in total but I doubt I will need more anyway. If I do, I can easily add an additional data element per level that will let me use more.

I also need to fix a bug with randomizing when the randomization change interval is set to something else than 1 (for the floor)

I am currently using Runer112 sprite editor in WabbitEmu and copying the data by hand on my calc. As reference, I added code (commented for now) at the beginning of my program that displays the entire sprite sheet. If it gets too hectic to remember each sprite position, I'll store it to a BASIC pic

It looks really nice and simple, and I really love the physics, they look very good.

Thanks.

To answer Shmibs questions, nope the jump key won't make you jump higher when holding it down longer. It would be pointless anyway since most of the time you hit the ceiling when jumping. As for moving around, you can move left or right when you want.