oh right I forgot about the grayscale when talking about scrolling

For grayscale, the entire tilemap would have to be redrawn every frame, only allowing 8 pixel scrolling (unless you display the tilemapper 4 pixels to the right, then next time it scrolls 0 pixels, then moves one tile into the tilemapper, repeating the 4 pixels to the right then 0 over and over. In this case, you would need to display a 4x56 black bar both to the left and right sides of the screen after updating the screen with the tilemapper everytime, to hide the weird display issues it would cause. And then, would it be fast enough to achieve 4 lv grayscale?)

wow looks amazing

A couple of other mock-ups...



The insidious Bone Graveyard (Stage 2)



Fully-powered Vixen blasting through Stage 6 (Blazing Suns)

There are six normal stages divided into "blocks". A block might be two entire stages in a single map. The stages are arranged this way for the appearance of cut-scenes. (which occur after clearing each block) Generally, multiple stages appearing within a single block are fairly short, so that the total block length isn't overwhelming.

Some stages will have a bonus objective. If that objective is cleared, the player will enter the bonus stage immediately after that block. In the bonus stage sequence, the player has the opportunity to collect many power-cells, and a few 1-ups scattered throughout the stage. Each power-cell has the additional effect of granting the player accumulating bonus points. (100, 200, 400, 800~) If the player crashes-out in this stage, they don't actually lose any ships. (or power-ups) On the other hand, any bonuses collected in the stage are lost.



If the player clears the normal game mode without losing any ships, then they'll unlock four additional, more difficult stages: Stages A - D. Clearing either mode is necessary to unlock specific game features.

I'm glad everyone likes the concept and design. Gradius / Nemesis is one of my favorite series. I've played most of the games to death - including the more obscure versions; such as the MSX games.

Of course, I don't intend to infringe on what Konami has put forth, and have in fact presented the story from the perspective of an alternate timeline in the series canon. I hope I can inspire other people to take-up an interest in the series, which I'm sure is a modest goal toward helping Konami's own fanbase along.

I should note the game is really just a rehash of features and designs already found in the series. Nothing really original here. You're merely getting a glimpse of the classic series.

The design is great and I played a bit Nemesis for GB. I don't know but the smooth scrolling can affect badly the grayscale? I guess there is always some changes to the grayscale engine to reduce some flicker but it has side effects in more still graphics.

Wow, those mock ups are Amazing!  Zera, you come up with the coolest things!

Mhmm if it is easy, you should prbly post how, cuz I have no clue how

It might be useful for many people
 
For 3 level grayscale with no scrolling I would probably store two tilemaps with different tiles in both buffers and quickly swap between them, though.

It should be fast enough, after all it is just like any other RAM.  For scrolling greyscale i see a potential problem though, when the map scrolls (every frame presumably?) then the checker pattern used for grey would also be offset, and possible not clash with the previous checker patter on the alternait buffer the right way to achieve greyscale?  Maybe it would need to have scrolling by 2 pixels, or maybe 2 frames per scroll? o.O

* Builderboy will have to run some tests *