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Apollyon - New Alien based game for the Atari 2600

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2018-04-09 - Update

Final bins uploaded. This is the most I could do, testing it on a real hardware.

 

 

2018-03-29 - Update

 

 

New version is ready to try out for debugging! In the last room, i tried out if I can put twice the same player(1) next to eachother to double the sprite windth and yes, it worked. :D Unfortunately, with a constantly moving object like you, I just don't have enough space for the code left.

 

Important things:
-Left Difficulty Swicth: Starting with 3 or 1 lives.

-Right Difficulty Switch: Turn music on or off

-Select: Turn flashing on or off. Turned off black rooms will be dark gray

The adult xenomorph gains one life as it kills someone.

To finish the game, you have to kill all the people and destroy the generators.

 

 

-----------------------

Hi guys, it's me again. :) I have been working on this for a month, besides the box and other stuff for Plague, I just can't stop with Batari Basic. :D

I had to optimize a lot, so the stage is only has 28 rooms and intake with a pseudo-3D maze style. Enemies will be added later, you have to complete the whole life cyrcle of the Xenomorph and whipe out all living on the space station. Now you can only play as the facehugger. The hard part will be the adult Xenomorph, because it's 16 pixels wide, so I will draw the first part of it in the one drawscreen, and the second part on the other drawing.

 

Here is a short footage recorded in emulator:

 

If it will be released, I won't mention Alien or Xenomorph on the box/manual, because I don't want to fight lawyers of 21th Century Fox.

post-43241-0-30634100-1521148962_thumb.png

post-43241-0-35569100-1521148968_thumb.png

post-43241-0-41655000-1521148973_thumb.png

Apollyon_NTSC_0.12.bas.bin

Apollyon_NTSC_0.37.bas.bin

Apollyon_NTSC_0.41.bas.bin

Apollyon_PAL50_0.41.bas.bin

Apollyon_PAL60_0.41.bas.bin

Edited by MemberAtarian
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First two enemies created. There are two cannons on the stage, they will be beatable from behind. The sciencetist has a defense centric strategy, he's trying to avoid you and flee as you get close. The soldier will be braver and more agressive. :)

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Okay, now the stage is full with enemies. :) I set the facehugger invulnerable because it would die by two hits (it's the duty of the adult Xenomorph to kill everyone), but now you can see how different the strategies of the two enemies are. The scientist is defensive, only attacks as you are close and in a range, but the soldier is like Rambo. There are two generators that could be destroyed to open two doors, but that would make the rooms around them complately dark.

 

The buttons on the console works like:

LeftDif.: 3 or 1 eggs

RightDif.: Turns music on/off

Select: Turns red flashing on/off (instead of the b/w that works different on the 7800)

 

What's left? The evolution of the Xenomorph and the last boss. Hope that bank 8 won't get full with graphics elements, I want to do some little animations with the playfield.

Apollyon_NTSC_0.18.bas.bin

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Wow, that's awesome!

 

 

 

 

 

P.S.

Select: Turns red flashing on/off (instead of the b/w that works different on the 7800)

There is example code around these forums to make the B/W switch work properly with the 7800.

Edited by KevinMos3

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No problem, select works fine whis way. :) I did not plan using it anyway during the game. :)

 

Wow, that's awesome!

 

 

 

 

 

P.S.

There is example code around these forums to make the B/W switch work properly with the 7800.

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New version is ready to try out for debugging! In the last room, i tried out if I can put twice the same player(1) next to eachother to double the sprite windth and yes, it worked. :D Unfortunately, with a constantly moving object like you, I just don't have enough space for the code left.
Important things:
-Left Difficulty Swicth: Starting with 3 or 1 lives.
-Right Difficulty Switch: Turn music on or off
-Select: Turn flashing on or off. Turned off black rooms will be dark gray
The adult xenomorph gains one life as it kills someone.
To finish the game, you have to kill all the people and destroy the generators.
To burst the chest, tap the fire button. ;)

Apollyon_NTSC_0.37.bas.bin

Edited by MemberAtarian

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To finish the game, you have to kill all the people and destroy the generators.

 

And find the queen? (To save her)... for the instructions or not necessary? Saw you in her room at the end of the video you posted.

Edited by 4ever2600

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For the title screen, change "In Space No One Can Hear THEY Scream" to "In Space No One Can Hear THEM Scream" (or YOU, if you're using the actual movie tag line). And "No One" should be two words...

 

Looks fantastic!

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Btw, is this game standard 32k or using dpc plus and or sara chip?

It's standard 32K, like Plague. :) I try to expand the capabilities of Batari Basic as possible with the standard Atari 2600 setup. :)

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Trying to understand opening phrase.

 

IN SPACE NOONE CAN HERE THEY... SCREAM!

 

Should it say

 

IN SPACE NOONE CAN HERE THEM... SCREAM! ??

 

Just wanted to make sure I wasn't misunderstanding.

 

Game play looks insane!

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Trying to understand opening phrase.

 

IN SPACE NOONE CAN HERE THEY... SCREAM!

 

Should it say

 

IN SPACE NOONE CAN HERE THEM... SCREAM! ??

 

Just wanted to make sure I wasn't misunderstanding.

 

Game play looks insane!

 

Already changed it in the code, you are right. :)

 

Plan for the visuals:

post-43241-0-72169000-1522467705_thumb.png

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More and more awesome every day. Is this basically completed aside from possible bug fixes if any?

You are just right. I'm working on the manuals right now. :) It will be shaped like the egg (ovomorph)

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I'm kinda wishing this is what came out under the "Alien" label back in '82 (even though I do like that game also). :)

 

The air ducts are such a cool feature too.

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