Ludum Dare 32 — April 17th-20th, 2015 — Theme: An Unconventional Weapon

chromenopePSA: As of Chrome 42 (Released April 14th), NPAPI plugins are disabled by default! That means Unity Player, Java, and Silverlight games will not work in the Chrome browser! That said, Flash in the Chrome browser continues to work fine (PPAPI).

To Developers: Consider using HTML5 and WebGL instead. Having troubles with the export? Don’t worry. See Ports below.

To Players: A workaround is to enable NPAPI plugins in your Chrome settings. Click or Copy+Paste this URL in to a tab:


As of September 2015 however, this option will no longer be available.

Other browsers (Firefox, Internet Explorer, Safari) and Flash are unaffected, but FWIW there is no Unity Player or Silverlight for Linux.X

Back to Browse Entries

USB Warrior

by DraKlaW - Jam Entry

Fight evil robots with your USB sticks !

Our modest participation. Coded from scratch with SDL2, Eigen and M's JSON parser.

Binary for Windows available.
Run under linux, but must be compiled manually (see GitHub).
Should run under MacOS, but untested.


And now, some flavor text, for those who like that sort of thing.
(Yes, we totally came up with the plot fifteen minutes before the deadline.)

USB_warrior - Stick it to the man.

In a not so distant future, powerful corporations have taken over all of Earth's ressources.

Using mass-produced, heavily armored robots that run on undisclosed proprietary technology, they have locked themselves behind walls of steel and impenetrable security systems... or are they ?

Indeed, a young, intrepid she-android known only as A.M.I. has made a game-changing discovery : almost every operating robot still includes an outdated model of USB plug, along with its vulnerable firmware. USB sticks are few and far between these days, and their aging memories make them more and more shoddy. But some are still reliable enough, and our heroine now intends to wrest control of any hostile robot, by simply sneaking up on them and back-plugging their vulnerable USBware !



We made a few updates till the deadline:
- Fixed the error message about missing dependencies in the Windows binary.
- Updated the README.txt to explain how to compile. (Note: should be painless under Linux !)
- Redirected logging to log.txt, so that people encountering crashes can send us a bug report with detailed information.
- Fixed a crash with a meaningless error message when assets are not found (which should not happen if you use the windows version, unless you mess with the layout of the archive). Now there is a clear error message, but chances are that the game will still crash anyway - but a least the log should tell us why.

There is also the updated version (we do not provide a precompiled download for this one, only source, see below). It contains a few enhancements right now, but we will add levels we did not managed to get for the deadline eventually.


If you encounter any bug, please post a bug report on our github (the source link below) with a copy of the log.txt file so we can try to fix it.

Downloads and Links




plokdev says ...
Apr 21, 2015 @ 12:42pm

Couldn't run it on Windows 8.1. Wanted "libgcc_s_dw2-1.dll".

DraKlaW says ...
Apr 21, 2015 @ 12:50pm

Indeed, we had forgotten a flag to include the standard libary ; the archive pointed by the link should now be a fixed one.

plokdev says ...
Apr 21, 2015 @ 12:54pm

It no longer throws that error, but nothing happens when I click the EXE. I tried the usual tricks (running in admin mod, and setting the compatibility to XP and Vista) to no result.

HeuGamer says ...
Apr 22, 2015 @ 4:52am

The ladders could use some fixing up, but other than that, solid entry.

Reis Mahnic says ...
Apr 22, 2015 @ 4:53am

Fun concept, and though I see you had issues in above comment, I had no issues on Win 7 64.
For 15 minutes, I love your little story.

FeniX says ...
Apr 24, 2015 @ 6:31pm

I was able to run it on Windows 8.1, but after finishing first level I see the end screen. Is there anything specific I should do to get to another levels?

TheMeorch says ...
Apr 24, 2015 @ 7:06pm

The controls surrounding ladders are a bit finicky. You may want to snap the player to the center of a ladder when climbing, so they don't end up getting stuck at the top, where the ladder meets the floor above. Also, when walking on a floor that has a ladder leading down, players probably shouldn't fall when they reach the top of the ladder.

jacketsj says ...
Apr 24, 2015 @ 7:20pm

Good mechanics, good idea, but maybe next time focus more on having multiple levels :P

DraKlaW says ...
Apr 24, 2015 @ 7:26pm

@Plokdev : Well, sorry, not sure what's going wrong for you, so I can't do much.

@HeuGamer : I'm going to pretend that the ability to make crazy jumps from a ladder is a "feature". (As is F2.) But yeah, you're right. (See below.)

@Reis : Glad you liked it. :)

@Fenix : Ehrm... there isn't another level at the moment. We coded the engine from scratch (well - using SDL and Eigen vectors), and started to work on actual levels very late. We have several unfinished levels, but we couldn't finish their gameplay mechanics before the deadline, so we decided to just leave what worked.
Hopefully, we'll be able to capitalize on the engine for our next jams. We chose to do it from scratch because we used some pre-made JS lib for our first jam (last year), and, well, JS was a real PITA.

@TheMeorch : I thought about snapping players, and then just reduced the hitbox when the "ladder" flag was set ; because I wanted the player to be able to move left-right while climbing. In retrospect, you're probably right though. (And I could/should probably have done both.)
Pretending downward ladders are floors is also a good feature. (And given the current physics code, probably not too hard to do.)

EthanWebster says ...
Apr 26, 2015 @ 6:55pm

Fun little game, could do with more levels though :)

You must sign in to comment.

Mini Submission FAQ

TEAMS: Teams entering the Jam should pick a single representative to submit your game, or create a team specific account you can share. We currently do not support Team Voting, but sharing an account and together playing and rating games is acceptable.

CAN I ENTER BOTH EVENTS?: You should pick 1 event, whichever you think it’ll do better in. If the idea is strong, and everything plays well enough, you can go Compo. If you’re a perfectionist, and would prefer people to play a more polished game, do the Jam. Historically, more games are entered in the Compo, but with more people and more time, Jam games have the potential to be better (that doesn’t mean they are). Many solo participants do enter the Jam.

If you made 2 games, unfortunately, the website doesn’t support multiple submissions per user. To submit your 2nd game, you will have to make a 2nd account. Only do this if you made 2 games. Alternatively, if one game is better than the other, then consider just entering the better game.

CAN I KEEP WORKING UNTIL THE DEADLINE?: Yes! Immediately after the 48 or 72 hours, we do something called Submission Hour. As the name suggests, it’s an extra hour for you to package, upload, and submit your games. If there were catastrophic issues trying submitting your game, or you misunderstood how submissions work, that’s okay. It happens. We’re flexible. If you need advice, check with the folks on IRC. If you need an admin, get in touch.

CAN I KEEP WORKING ON MY GAME?: Oh definitely! You should! But for the sake of judging, keep the Compo or Jam version around. You can include a link to the Post-Compo/Post-Jam version of your game on your games page, but sure your main links are the original version.

PORTS: Ports to other platforms can be done after the deadline. That said, the sooner you finish your port, the sooner people can play your game, improving your chances of placing in the final results. For best results, provide a Web version of your game, or a Windows version with no dependencies. Also be sure to rate at least 20 games to improve your visibility (Coolness).

MY GAME CRASHES, IS UNBEATABLE, OR I MADE A TYPO: We allow you to fix crashes, win condition, or tiny bugs after the deadline. In a sense, this is like “porting” to support more players. We leave this open to interpretation, but generally speaking your game should be identical to the game you submitted. No new features, just fixing mistakes you should have caught had you been better rested.

MY GAME DOESN’T SHOW UP: If you can’t find your game, it’s usually because the URL to your downloads are missing ‘http://‘. Fix your URLs ( and you will show up. Alternatively, if you just posted it, wait a minute. The cache may not have refreshed yet.

NOT LOGGED IN?: If you get a message about not being logged in, even though you are, it’s because your web browser cached the non-logged in page. You can fix this by either refreshing your cache or clearing your cache. CTRL+F5 in many browsers. Chrome is a bit more work. Press F12 to enable Developer Mode, then you can right click on the refresh button and select “Empty Cache and Hard Reload”. This option is unavailable if you are not in Developer Mode.

[cache: storing page]