The Development Project

is a Half-Life 2 modification purely made out of manipulated
Dev textures as a project for those that enjoy the simplicity of the original measuring textures created by valve scattered throughout the map but also enjoy all the effects, adventures and creativity of regular mods.

We are also trying to achieve the idea of mini-mods at the moment of which small detailed mods are created using the TDP content of improved dev textures through materials, models and maps but with a good amount of focus on gameplay for the players enjoyment.


TDP has development into an online multiplayer mod of many gameplay types in the making after coming to a conclusion that most mods of half-life have consisted of a great variety of online game-play types and options to play with friends over great amounts different.


Into possibly the slowest production of this modification now known as 'The Development Project', it's still under construction with a fully re-written storyline, new level design concepts and being pointed into the right direction of which will lead to a faster and better continuation of the project where more updates in the future will follow for those that are interested in this modification.

Meet the Team

Project Leader

Concept Artists

Level Designers

Graphic Designers

Sound Artists

Music Makers



Story Developer
Lord Kameron


Web Designer

Beta Testers
Joure, Dec, Mac, Ferret

Voice Actors
DukeRobear, Dr.Doozer, Shinobi-Kitten

Special Thanks To:

Darkness_Called, Bigglesworth, Discrate, Dec, Razura, Ferret, mtm0201, Happy^Camper, Cruckz.


You can keep up with the latest updates on TDP by going to the links below!

Like us on facebook for latest development!


Are you...

  • interested in working on a mod for half-life 2 using Dev textures?
  • willing to learn different areas of game development?
  • work as a team to achieve something serious that is new and original?
  • contribute as much as you can.

Or do you...

  • enjoy mapping with Dev textures?
  • want to expand an idea you have?
  • have the will to make something something else?

If the above points relate to you, then we want you to help contribute to The Development Project. Either in a different style, create something that the mod can use towards other dev styles or to even make something we already have created. Then you can send a Personal Message to Mapster on Moddb along with some current work you have COMPLETED yourself as well as what you would like to contribute with, and he will contact you asap with a response.


Favourited Comments:

Image RSS Feed Latest Screens
kill_counter Map testing Slaughter Room
Blog RSS Feed Report abuse Latest News: Heavy 2013 update

8 comments by ~Mapster(WFc) on Jan 6th, 2013

Late happy new year moddb!

For the past two weeks I have had leave from my job, and using this time i have been able to work on TDP and get something pushing further towards release. Doing this, i have come up with a plan to create a multiplayer game instead of a single player allowing me to test this with my current beta testers making it more enjoyable to work on.

Click picture to view full version

So ever since the end of 2012, I have managed to port TDP to deathmatch using the episode 1 engine ( this also allows people that do not have episode 2 to play the game ), change the zombie models and give them new skins and code.

Click picture to view full version

Amongst new code I have incorporated 2 new entities so far consisting of a kill counter that no does not need templated npc's in hammer in order to count then and can be used in hammer each zombie kill and then used in triggers such as opening doors or locks for weaponry, the second entity is a zombie maker that will allow the mapper to variate between the different zombie textures for different areas such as the brown environment below.

Click picture to view full version

Above is an example picture of just half an hours worth of mapping using a single projected texture, a couple zombie models and textures. Very basic but imo it's very effective for a multiplayer game scene.

Slaughterhouse alpha gameplay - Mod DB

One more update to post to everyone after a video request is an alpha game video of slaughter houses that still requires a lot of changes towards it but it shows all the the above updates and a general idea of how the map design will look when using green dev textures.

Like us on facebook for latest development!

Enjoy, be safe, and have a happy new year moddb.

Media RSS Feed Latest Video
Downloads RSS Feed Latest Downloads


Nov 28, 2011 Wallpapers 2 comments

-Normal 4:3- 1280x1024 1280x960 1024x768 800x600 640x480 -Widescreen 16:9- 1680x1050 1280x800 1150x720 740x480

Basement Wallpapers

Basement Wallpapers

May 20, 2009 Wallpapers 14 comments

An old Wallpaper from the early stages of TDP for you to set to your desktop.

Post comment Comments  (0 - 10 of 137)
UnitedDucks Aug 12 2014, 9:35pm says:

The protagonist should be info_player_start

+1 vote     reply to comment
RandomUserMDB Jun 6 2013, 1:46pm says:

This is alive right?

+2 votes     reply to comment
~Mapster(WFc) Creator
~Mapster(WFc) Jun 6 2013, 6:45pm replied:

Recently I have taken a bachelor in computer science at university so all my time is spent studying on that, so for now this game is on hold until I have the time to work on it.

+2 votes   reply to comment
StegoSigma Nov 6 2013, 1:23am replied:

I wish you luck in achieving your degree.

+2 votes     reply to comment
cW#Ravenblood Sep 4 2012, 12:59pm says:

Haha the first comment in your description is just awesome (:
Still watching this :3

+1 vote     reply to comment
~Mapster(WFc) Creator
~Mapster(WFc) Sep 5 2012, 3:36am replied:

One of the reasons to why I put it there for viewing and thank you for still watching the mod! :)

+1 vote   reply to comment
Discrate Jul 8 2012, 4:36am says:

Great to see this up and running again Mapster :)

+1 vote     reply to comment
~Mapster(WFc) Creator
~Mapster(WFc) Jul 14 2012, 1:26am replied:

Thanks Discrate!
Still pushing it as always! :)

+1 vote   reply to comment
Easimer Jun 27 2012, 1:27pm says:

Good, I love this textures because it's simple. If complete, please put it to Steam, I want download through Steam.

+3 votes     reply to comment
~Mapster(WFc) Creator
~Mapster(WFc) Jun 28 2012, 12:52am replied:

That has been on the plan list ever since the start of development, but whether or not valve accepts, it is up to them.

+2 votes   reply to comment
Gameboy555 Aug 16 2012, 10:20pm replied:

I think I got your answer right here , this will coming out soon

+2 votes     reply to comment
~Mapster(WFc) Creator
~Mapster(WFc) Aug 17 2012, 2:45am replied:

I think that's a new update, ill be sure to try and upload TDP to there when its ready! :)

+1 vote   reply to comment
Post a Comment
click to sign in

You are not logged in, your comment will be anonymous unless you join the community today (totally free - or sign in with your social account on the right) which we encourage all contributors to do.

2000 characters limit; HTML formatting and smileys are not supported - text only

Half-Life 2: Episode One Icon
Send Message
Official Page
Release Date
Mod Watch
Track this mod
First Person Shooter

Latest tweets from @hl2development

Argh... so much pink... Inspired from this picture:

Sep 17 2013, 5:42am

Amongst the harbour of Wellington City there is a bridge with padlocks snapped together with no keys done by...

Sep 17 2013, 4:03am

A delicious Korean beverage

Jul 28 2013, 10:50pm

Results back for basic java programming at university with a smashing A+. Bring on trimester 2!

Jul 10 2013, 11:19pm

Small amount of work done on BOT's model, model just needs a small amount of work done on the legs.

Jun 27 2013, 11:45pm

Living death, made for Sharon Cheon. The hardest climb Puffing and wheezing, my legs shake as the rain hurling...

Feb 17 2013, 9:35pm

New update is now up on moddb with a video demonstration, more concepts and much more!

Jan 7 2013, 6:03am

Converting TDP to a multiplayer game, creating a new entity for hammer which you can view in our latest hammer album!

Jan 1 2013, 2:17am

Managed to get the zombie models to change and now i can start working on new skins for them!!! You can view pics here

Dec 30 2012, 7:59pm

Over 7000 words now, much more organised with a few things needing re-writing but now making the storyline an easy 23 readable pages.

Nov 24 2012, 1:03am

Embed Buttons

Promote The Development Project on your homepage or blog by selecting a button and using the embed code provided (more).

The Development Project
The Development Project
Last Update
2 years ago
468 members