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Alien Attack (4K assembly) REALLY finished with updates/screenshots

7 replies to this topic

#1 easmith OFFLINE  


    Chopper Commander

  • 151 posts
  • Location:Alexandria, VA

Posted Thu Feb 15, 2018 10:52 PM

Ok,  I got a little feedback on the "prototype" so I went ahead and made some changes.  I think now it can truly be considered a finished game.
1.  Made 16 unique enemy designs/ 16 waves.
2.  Enemy speed is now controlled with fractional pixel movement , for more variations in speed and less abrupt change from slow to really fast, thanks to help from SpiceWare for this.
3.  Figured out how to enlarge Enemy missile without flicker.
4.   fixed bug where death sound would play indefinitely
5.  Reduces delay before button reset kicks in. 
6.  Added  win screen after wave 16.

​7. 2 hits per battery level

Again, the idea is to take out the 16 waves before the enemies take out your laser cannon or power supply , or outlast your power supply.
Now I think it is good enough to be considered  a pretty solid first effort, at least technically , for just 4 weeks of work.  ROM is actually 3K.  


Still think it might be too hard , but would rather it be too hard than too easy.
Super impressed with the community's willingness to help  ! It kept me wanting to improve.


​                                                                            game shot
                                                                         gameover shot
                                                                           game won shot


new version below

Edited by easmith, Wed Feb 21, 2018 9:36 PM.

#2 easmith OFFLINE  


    Chopper Commander

  • Topic Starter
  • 151 posts
  • Location:Alexandria, VA

Posted Fri Feb 16, 2018 9:18 AM

oops...correct  bin file now posted  (  2 enemy hits per battery level)

#3 easmith OFFLINE  


    Chopper Commander

  • Topic Starter
  • 151 posts
  • Location:Alexandria, VA

Posted Wed Feb 21, 2018 6:55 PM

]It was bugging the heck out of me , so I added an actual title screen.  NOW I'm done....


intro screen.png


​I  had some cartridges made for fun.


​If anyone would like one let me know. I have 6 to give away free


see post below for new version

Edited by easmith, Tue Feb 27, 2018 8:07 AM.

#4 sodarun OFFLINE  


    Star Raider

  • 65 posts

Posted Wed Feb 21, 2018 7:14 PM

Downloading it now , looks cool




  • 831 posts
  • Location:Advanced Tech and Research Institute

Posted Wed Feb 21, 2018 8:54 PM

I'd be interested in a cart if the game runs well on a PAL unit. :)


Loving the title screen now.  It makes a big difference to the presentation. :)

#6 easmith OFFLINE  


    Chopper Commander

  • Topic Starter
  • 151 posts
  • Location:Alexandria, VA

Posted Sat Feb 24, 2018 10:40 PM

Added a shield feature, activated by pulling down.  Lasts one second, then you must wait 4 seconds. to use it again.


Since I am waiting to have carts made while folks help me test it on real hardware , I might as well add more stuff.....


Maybe difficulty options...

Attached Files

Edited by easmith, Sat Feb 24, 2018 10:42 PM.



    River Patroller

  • 3,766 posts
  • Location:Coral Gables, FL

Posted Sun Feb 25, 2018 11:36 AM

Cool.  Downloaded!

#8 CrazyChris OFFLINE  



  • 917 posts
  • Location:OH

Posted Tue Feb 27, 2018 7:25 AM

I'll take a cart!

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