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A jam submission

SPAM Factory Inc.View game page

A clicker game for the original Gameboy.
Submitted by madpew (@madpew) — 2 hours, 29 minutes before the deadline
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SPAM Factory Inc.'s page


CriteriaRankScore*Raw Score

Ranked from 10 ratings. Score is adjusted from raw score by the median number of ratings per game in the jam.

Source code

Tools used
Compiler: SDCC - GPL/zlib
Library: GBDK-n - OSI
Code Editor: Notepad++ - GPL
Graphics: GBSpriteStudio (pending release as foss)
Music: OpenMPT - GPL
Converter: pewMusicConverter (pending release as foss)
Emulator: GameBoy-Online - see github repo for licence

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I wasn't quite sure if I was doing anything correctly. I included it in my Open Jam 2018 compilation video series, if you’d like to take a look. :)


Thanks for playing. It's hard to tell whats going on without a proper explanation, but you did quite ok.

It's about managing input (targets) output (mails) displayed at the bottom, and consumption (power/money/upgrading the pc).

Jam Host

I beat the game!!  Nice game Madpew!


Well done!

I honestly didn't think anyone would really play this through. Once you figured out how things work it's over pretty fast but I expected people to leave before reaching that point :D


Got me an emulator just to play this game, I liked it. The dark side of spam is no place for me, though. Good job.

Jam Host

Open Source Karma Points:


Very impressive. The art is super well done. Played it on an emulator on my phone and it works great. Now I just have to learn how to win XD (Spam is the answer I guess). But seriously, this is one I'll probably play again some days down the road.


I always love a good incremental game.  Although at some point my money wouldn't increase and I almost couldn't buy RAM.


Gameplay is pretty simple. After going first time bankrupt you will get the trick. I like the start screen but the workbench screen is not that pretty. Anyhow I will definitely have a look on your code base as I´ve ever wanted to create a gb game! :)


Hey there, thanks for the feedback.

If you want to look at gameboy development, the setup used is fine for getting your feet wet, but you should ultimately switch to assembly as soon as possible. The used compiler (SDCC) and the library (GBDK) are full of quirks and bugs that mess up your perfectly fine C-code so working with it can be quite an bad experience. (Being new to gameboy dev I spent hours searching for bugs in my code that actually weren't my fault in the end, just as a warning before you step in). Nothing beats seeing your own game run on the real hardware though!

Thanks for the info! I also want to try building Game Boy games. Tobu Tobu Girl managed to do a lot in GBDK in 2017... I really don't want to learn assembly lol. I'm not sure which is harder.


Actually it's not that hard, and pretty similar in GBDK anyways. There are some basic helper functions but most of the work is setting registers directly anyways. Also GBDK creates a big overhead for function calls and stuff like that. Once you go past the hello world it can get pretty frustrating. Give it a try!