About jacklehamster (twitter: @jacklehamster)

Jack Le Hamster, french game developer.


Ludum Dare 37
Ludum Dare 35
Ludum Dare 34
Ludum Dare 30
MiniLD #51
Ludum Dare 29
Ludum Dare 29 Warmup
MiniLD 50
MiniLD 49
Ludum Dare 28
MiniLD 42
Ludum Dare 26

jacklehamster's Trophies

I played too much of your game.
Awarded by ViKing Games
on September 7, 2014
you have been in Helevenium #LD29
Awarded by alvivar
on May 19, 2014

jacklehamster's Archive

After Slimilization, here comes SLIMECRAFT

Posted by (twitter: @jacklehamster)
Wednesday, December 16th, 2015 11:17 pm

Lately I’ve been playing a lot of Starcraft, so I couldn’t help myself to produce an RTS for LD34, especially when you hear the theme “Two button controls”.

A two-button multiplayer RTS, now that sounds like a great idea!

Ya think? Check out http://ludumdare.com/compo/ludum-dare-34/?action=preview&uid=20841

Aside from that, great entries so far in LD34. I’ll be rating some more after squeezing a few zergling rushes on SC2.

Keep an eye out for the upcoming expansions of SlimeCraft: Heart of the Slime, and Legacy of the Slime!

Screen Shot 2015-12-16 at 8.16.18 PM

Joining in!

Posted by (twitter: @jacklehamster)
Wednesday, December 9th, 2015 11:00 pm

Lately, I was busy with my job, so in terms of indie dev, I’ve made either nothing, or a bunch of crap.

But that’s about to change this Ludum Dare!

Our LD33 submission: Ev0L

Posted by (twitter: @jacklehamster)
Monday, August 24th, 2015 3:54 am

For LD33, I collaborated in a team of 4 to deliver Ev0L. In this game, you are the “virus”, strolling through a human body and contaminating all the cells, and trying to reach the heart. We had 2 programmers, 1 designer and 1 artist, and I participated as one of the programmer.

I also produced the music, but since it’s an old song, the audio won’t be counted for the jam. Feel free to comment on it though 😉

Please check out our entry at: http://ludumdare.com/compo/ludum-dare-33/?action=preview&uid=57566


LD31 list in a JSON file

Posted by (twitter: @jacklehamster)
Monday, December 8th, 2014 3:59 pm

I’ve made a list of all the games in LD31 so far, in JSON format in case you guys want to make something cool with it.


The list will get updated once LDJam is over, but the link will remain the same.

When you lack motivation to keep going…

Posted by (twitter: @jacklehamster)
Saturday, December 6th, 2014 5:58 pm

YOUPI, I’m in!

Posted by (twitter: @jacklehamster)
Friday, December 5th, 2014 9:46 am

For once, I’m gonna ditch Flash and try something new: JAVASCRIPT. Yah, it’s not that different. Well it is for me, cause I’ve been so used to Flash. I did work on JavaScript games in the past but it’s been a very long time.

So the tool I’ll be using:

  • Brackets as text editor
  • Flash CC only as an art tool (I’m not making a Flash game this time!)
  • Garage band, cfxr
  • And this new weird tool I just created yesterday called YOUPI.


So wait, what’s with YOUPI? So here’s the story. I got bored yesterday, so I decided to produce some tool that would be useful for Ludum Dare. So I made this thing called YOUPI, which is essentially YouTube looper, or you can call it an “animated GIF with sound” creator. It’s also open source. I thought maybe I could use it to add cut scenes or looping background in a game.

The result… is really stupid… so delightfully stupid… that I felt compelled to share it. So far, I’m not sure if it’s actually useful for anything, but it’s kinda fun to use. Perhaps if you make a time-lapse video and want to share a part of it, you can use the tool and you won’t have to generate a gif. Or perhaps you want to loop some music in a javascript game. Rather than program it, you just put YOUPI somewhere on the page and you get the image as a bonus… Geez really? What is this tool useful for?

Anyway, I thought I’d use the LD31 keynote to show what you can do with YOUPI:



For the last round of LD themes, I decided NOT TO VOTE

Posted by (twitter: @jacklehamster)
Thursday, December 4th, 2014 2:19 pm

Because frankly, all the themes look good. I can’t wait to see which one comes out!

SLIMILIZATION – the big reveal

Posted by (twitter: @jacklehamster)
Saturday, September 6th, 2014 4:43 pm

So it’s been a few weeks since I released SLIMILIZATION, a Ludum Dare 30 game:


The Ludum Dare theme is Connected Worlds. At first glance, SLIMILIZATION doesn’t seem to match the theme, but the game actually has a secret. Basically, it connects player into the same world. Everyone is playing on the same map, starting at different random location, like in the game Sid Meier’s Civilization.

More details here: http://jacklehamster.wordpress.com/2014/09/06/slimilization-the-big-reveal/

Video of someone playing Ludum Maze 30

Posted by (twitter: @jacklehamster)
Wednesday, September 3rd, 2014 1:59 am

Hey, so a few days ago, I released this Ludum Maze thingy, which is a collection of all Ludum Dare 30 games inside a maze, and it got featured on Gamejolt (Thank you, Gamejolt!).

Since it got a bit of attention, a YouTuber named JustMoistGaming made a video of it, and tried out 3-4 Ludum Dare games along the way. What’s interesting is seeing the perspective of someone who has no clue about Ludum Dare, play Ludum Dare games.

Check it out:


Screen Shot 2014-09-03 at 1.56.23 AM











I didn’t manage to track down which games he played, but by chance you might recognize yours!

Can you find your game in this infinitely large maze?

Posted by (twitter: @jacklehamster)
Friday, August 29th, 2014 6:43 pm

What a better way to explore all 2539 LD30 games?

For Ludum Dare again, I produced another Ludum Maze. Note that this is not my LD30 entry, but something created separately. (I didn’t make this in 48h!) This is a maze that combines all the games. As you explore the maze, you can click on posters to get to the game itself. The maze also contains a bunch of random videos, more or less related to Ludum Dare.

The list of games was fetched from ludumdare.com and available here in case you want to create something out of it.


Screen Shot 2014-08-29 at 4.20.29 PM copy











… Because we’re all connected!



JSON file listing all LD30 entries

Posted by (twitter: @jacklehamster)
Monday, August 25th, 2014 7:00 pm

I’ve collected all the entries into a JSON file for those of you who are planning to produce neat tools around all the LD game.

I will be updating the file regularly, as people sometimes update the URLs / screenshots in their entries, but the link to the file will stay the same:


The tool used to produce this list is a Flash Builder project available on Github:


Screen Shot 2014-08-25 at 6.56.59 PM

Done with my game “SLIMILIZATION”

Posted by (twitter: @jacklehamster)
Monday, August 25th, 2014 1:21 pm

Screen Shot 2014-08-25 at 11.54.43 AM










I was pretty confident in the beginning, having this awesome idea in mind. It didn’t involve those ugly green slimes, that was just a placeholder. It was going to be a RTS on a gigantic map.

As things moved along, I lost momentum and begin realizing I might not have the ability to produce such game, and that my LD entry is gonna be real crap!

I spent most of the weekend complaining to myself and watching longplays  of Civilization 5 by BAStart Gaming (yes, I didn’t even have the energy to actually play the game!).

Eventually, all that Civ 5 got into my head, I finished my LD 30 entry as a Jam with my placeholder slime, and named it: SLIMILIZATION!


I might be joining the jam

Posted by (twitter: @jacklehamster)
Sunday, August 17th, 2014 3:07 pm

For the tools, I’ll be using

– Flash

– A graphic library written in AS3: https://github.com/jacklehamster/TurboGraph for graphic acceleration.

– Garageband for music

– cfxr for sound effects

– Google Translate for voice overs

Blog post “How to create a game”

Posted by (twitter: @jacklehamster)
Friday, June 27th, 2014 9:37 am

I found myself procrastinating in terms of making games, so I just wrote a blog post about making a game:


If you need a boost, feel free to check it out! Everyone needs a break.

Making multiplayer game with PlayerIO

Posted by (twitter: @jacklehamster)
Tuesday, June 10th, 2014 12:31 pm

I just posted a tutorial on making realtime multiplayer games using PlayerIO.

Check it out:


Post-mortem for Princess Fart

Posted by (twitter: @jacklehamster)
Tuesday, May 6th, 2014 6:27 pm

Alright, I think it’s a good time for writing a post-mortem for my game, Princess Fart!

The Story behind the making:

For the longest time, my friend Sophie was interested in game I was making, so she wanted to join in a bit. We decided to make a game about her, and what can I say about Sophie? She’s a princess, and she farts! There, we have our theme 😉
Then came the LD29 theme: Beneath the surface.

Erghh…. I don’t really want to send my princess underground! Ok, beneath the surface is gonna mean beneath the surface of the skin, there’s an alien! Not the best interpretation of the theme but that will do.

I started with the look of the princess. She had to look princessy, but not too beautiful. Just a bit cute. I was going for the Princess Peach look, but then I changed the hair to black, to match Sophie ;-D





Next, the first thing I worked on was the music. It might seem strange to make the music before the game, but it turns out it’s helpful to repeat your theme song over and over in a loop while you’re working. It helps you get into the mood. So I was done with practically all the songs before I wrote a single line of code.

Then I spent the next 2 days producing the intro for the game. I got a kick out of using Google Translate (yeah all the voice acting come from there!). At the end of the compo, I didn’t even have a game, but only a lovely intro. The good part though, was that I had a good scripting mechanism, which allowed me to separate code related to the game engine, and code related to the game’s scenario (like cutscenes, scripting events ect…). The last day was the third day of the Jam, and it’s when the gameplay and the rest of the graphics were finished.

I finally released the game, and BIG mistake. I really should have gone through a lot more testing before releasing it on Newgrounds. The game got tanked because everyone got stuck right after the intro: See earliest comments on http://www.newgrounds.com/portal/view/638437


Oh well, I need to take a deep breath and relax. When you make a game especially for ONE person, you’re already a winner if that one person enjoys it. She didn’t even play the game, but watched as I played it in front of her (so she didn’t even have to go through the frustration of playing!) and she was happy. At the end, that’s all that counts.

That said, I really hope you all enjoy it too. A game about Sophie, my Princess Fart


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