January 2018 Update – A Dwarf’s Hold is his Castle

Hello undermountaineers! Does that work? Between family and/or Christmas it’s been a fairly slow and quiet month for King under the Mountain, so much so that I’m really intent on making more time available in the coming weeks. That said, there’s still been some development carried out over the last few weeks!

The biggest feature is that it’s finally possible to build walls (out of wood or stone) rather than relying on mining to mark out areas for rooms and doors.

As with most development at this point, this doesn’t quite have an effect on gameplay yet (other than giving another use for planks and stone blocks) but we’re still at the stage of laying out all the groundwork and base systems, before the interesting point at which they tie into and affect each other. Before long you’ll want to build walls and add a roof (where I’m not quite sure how that will be done yet – I don’t want to copy the way rooms/buildings are constructed in Prison Architect by requiring four walls and a door, but instead to leave it more freeform) to shelter your dwarves (or settlers of a different race) from the elements while they’re waiting for an underground home to be mined out (or perhaps you’re playing as humans who don’t like sleeping underground).

Read more

December 2017 Update – Go with the flow

This month was dedicated almost exclusively to research and development for getting flowing water, namely the river, into the game. In the end I’ve spent longer than I’d have liked on this feature, although having the river implemented unlocks the core game mechanics for the next section of development – farming crops leading into needing food and drink. The main reason for taking so long is that I spent a long time researching how flowing water could be represented in a top-down 2D game, which has not received much coverage that I could find.

The main reference implementation was published by Alex Vlachos of Valve in 2010 with a SIGGRAPH paper on how they achieved a flowing water effect in Portal 2.  For this technique, a flow map (a texture representing the direction of flow) is generated or drawn by an artist, and the water texture is moved across the surface according to the direction at the point in the flow map. However, as each point in the texture is being scrolled in a different direction, after a short time they become too-far distorted from each other which looks terrible. The solution described in the paper is to use 2 different water textures, and blend between them, one to the other, and when one becomes fully transparent to reset it so that it does not become too distorted (though this has an unfortunate “pulsing” side effect which is then masked by some noise). Here’s a video of an implementation of this made by Philip Fortier:

This approach was very nicely implemented in 2D by Shaun Baruth of Sector 12 Games, who shows the same effect applied to a 2D game:

This seemed to be the route I wanted to follow, although this approach requires a flow map, and I felt a flow map generated or calculated for a map as big as those used in King under the Mountain would not be very feasible, or at least not fast enough for the game to run well on low-end hardware. Ideally I was after something tile-based, so it could be applied on a per-tile basis rather than needing something to be generated for the entire map. While I think I could have adapted the flow map texture to this problem, fortunately I stumbled across a much better water flow algorithm (for my purposes) devised by Frans van Hoesel of the University of Gronigen.

Read more

November 2017 Update – Back in action

We’re back! But where have we been? Well you may know that in March to April the Kickstarter campaign ran to a modest degree of success, but unfortunately tailed off into not meeting the desired goal. The main contributors to the success of the Kickstarter was a bunch of very positive coverage due to exhibiting at EGX Rezzed (if you dropped by, it was a pleasure to get to meet you!) as well as a feature on Rock Paper Shotgun which was a lifetime ambition achieved – as well as all the buzz generated by you guys! Thank you so much!

Our stand at EGX Rezzed in London

Read more

Walls, how do they work?

In this post I’m going to explain how walls work in King under the Mountain. Not in the gameplay sense of them blocking movement (and light sources!) but in the technical sense of how the art assets are put together and handled.

First of all, no, this isn’t the monthly dev update to signify that development has kicked back into full swing *just* yet. Instead I’m trying to lay out some groundwork and guidelines to hopefully get some help with the project as well as a sort of technical primer for anyone interested.

It’s no secret that King under the Mountain‘s visuals are heavily inspired by Ryan Sumo’s work on Prison Architect by Introversion. Much like the floor tiles, the walls need to seamlessly tessellate with each other and may end up forming many different shapes, such as differently aligned corners and T-sections of walls.

Walls in different arrangements in the current build

Read more

Development temporarily on hold

When I cancelled the Kickstarter campaign, the plan was to re-launch it very soon with a much-reduced goal. This would help fund the freelance work being done on the game (mostly artwork, and some music) which is currently being paid out of my own savings. The original goal with the Kickstarter would allow me to focus 100% on the game, bringing it to release far quicker than development has been so far (as it is currently a “hobby project” in my spare time) as well as help fund this freelanced work.

Having spent a lot of time thinking about it – if I was to follow the plan of re-launching the Kickstarter with a reduced goal, I’d be continuing development in my spare time (which is fine by me!). However, this comes with somewhat poor timing as I’m moving house next week (which if you’ve gone through a home sale and purchase yourself, you’ll know takes up a lot of free time to organise and move things in and out of storage) and my wife is expecting our first baby in August when we’ll just about have become set up in the new home.

So after a great deal of thought, I’ve decided I wouldn’t be comfortable taking people’s money via Kickstarter now when I couldn’t commit to having enough time to devote to development or give a realistic estimate of an initial release window. The £45,000 goal with the original Kickstarter would allow me to switch my day job over to developing the game, with evenings and weekends free to sort out the move and family life. As I’ll now have to keep the day job (probably a wiser move in the gamedev world!) unfortunately it’s game development which is going to have to be put on hold for a while as I prepare for and then get settled in a new home with a new baby.

This does not mean King under the Mountain has been canned or cancelled though! Instead plans have just had to be set back with a delay of a few months before I can get back into the swing of development towards the end of the year. My apologies for not putting out this update sooner – it was a tough decision and I’ve also been hoping to hear from some indie-friendly publishers as a Plan B to bring in development funding rather than the Kickstarter campaign but it’s not looking likely right now. So as it is things may go quiet for the next few months but then I’ll be bouncing back and pressing on to releasing Alpha 1 as described in the Roadmap. I don’t know yet if the re-launched Kickstarter will happen (still the most likely option) or if instead I’ll just work towards a releasable Alpha 1 version and start a soft early-access style launch from there.

Finally I just want to say thank you for the really surprising amount of extremely positive coverage King under the Mountain has received during and around the Kickstarter campaign and I’m sure it’ll kick off again in the future! It was a fantastic experience being able to exhibit the pre-alpha version at EGX Rezzed and The PC Gamer Weekender, showing lots of genuine enthusiasm for the game which was awesome to see and a real motivator to keep pushing forward with it. Thank you for all your support so far and I plan to make this game into what people are hoping for from it!


March 2017 Update – Blast-off!

Today I realised that we’ve already been posting these dev logs for over a year now! Going to have to start including the year in the title rather than just the month, or perhaps move onto something different (more on that later).  First though, it’s with great pleasure that we can share the first trailer for King under the Mountain, produced by M Joshua:

For those of you who have only just started following us, it’s worth mentioning that this is an extremely early “pre-alpha” trailer to coincide with our launch on Kickstarter and Steam Greenlight. We’ve a big list of features still to come on the roadmap, and what’s shown now should only really be counted as a proof of concept prototype.

Speaking of Kickstarter – we launch on Monday March 27th at 18:00 BST (Click here to see what time that is for you)! Everything we’ve done for the past year has been building up towards this event and we’re incredibly excited its nearly here. A successful Kickstarter campaign will mean we can spend a lot more time developing the game and adding more content, rather than taking on contract work and side jobs to keep the lights on. It’ll also enable us to work with some extremely talented and creative people that can add a lot to the project, which we just don’t have the budget for currently. If you like what you see of King under the Mountain, please consider supporting us on Kickstarter (you can sign up for a one-off reminder email here) which really will let us kick-start (sorry) development way beyond what you’ve seen thus far. As a special preview, you can preview the upcoming campaign page at kickstarter.com/projects/rocketjumptechnology/921418061 and we’d love to gather any feedback from you guys!

Read more

February Update – First play

February was probably the biggest month for King under the Mountain so far, building on the heaps of progress from January to produce the very first playable build! The dwarves can now craft furniture out of basic materials (stone blocks and wooden planks) and, more interestingly, then use that furniture to produce more of those useful crafting materials from harvested resources (rough stone and wooden logs). Here’s a short video of some basic crafting in action:

Read more

January Update – Second Wind

Hello world! We’re officially in the build up to Kickstarter and all the events that go with it – including two gaming expos! But first, here’s a brief look at the state of the game. This month has seen a lot of behind the scenes improvements and incremental updates as everything is prepared for kicking off work on the game’s first trailer, which will be produced by the talented M Joshua.

You may notice in this video that there’s a lot more variety in the different outfits worn by the dwarves. These have been produced by Derek Restivo based on Anthony Avon’s character concepts and we’re excited to be able to present the final (first) set of them soon. There’s also now a full set of tools for the dwarves to use (and produce themselves) as the basics of the crafting system are put into place. We’re hoping to be able to show you some workshops and actual crafting in the very near future!

Read more

Magic in King under the Mountain

We’re not just building a game with King under the Mountain, but a whole world with its own lore and history to act as a unique setting. This is the first of several worldbuilding articles which will help design and inspire both the artwork and mechanics of the game. This time, we’re going to talk about magic – what it is, how it works, and what it means to your characters.

An illustration of the magic system
An illustration of the magic system featuring a human mage

There’s more to the world of King under the Mountain than meets the eye, quite literally. The game takes place in the physical, material world. Invisible to the naked eye, there also exists a spiritual, immaterial reflection of the world known as the Immaterial. These two planes of existence are tied together by a substance known as aether – intangible and external – which permeates the entire world much like air and the wind. Complementing aether, all living creatures and the planet itself contain what is known as mana – a well of spiritual, immaterial energy. Much like yin and yang, these differing yet complementing essences can be combined to produce magic – fantastic displays of power produced by harnessing the energy of aether and mana in tandem.

Read more

December update – Road to the world

There’s so much to get through this month, I thought it would be best to start with one of the recent in-game progress videos:

Above you can see that the dwarves are now able to haul resources (stone boulders and wooden logs in this video) to stockpiles as required. I felt it was very important to visually show the items being carried around in this way, in an effort to recreate the look and feel of The Settlers which is a big inspiration to King under the Mountain. We’re really aiming at recreating that feeling of a peaceful, industrious ant-farm-like hustle and bustle of a small society.

Easily the biggest news this month is that we’ll be attending EGX Rezzed in London from March 30th. Rezzed is the indie-focused sister event of the Eurogamer Expo and its incredibly exciting to announce we’ll have a playable demo of King under the Mountain for attendees to play!


Having this playable demo ready is also the primary milestone towards launching our Kickstarter campaign so with this event booked in I can also confirm that we plan to launch on Kickstarter on March 27th! It’s worth noting that this demo will be the most minimal set of features that we’re comfortable showing off – meaning most gameplay systems and features will be missing. It’s intended to show that King under the Mountain is a real game that people can play already (compared to some Kickstarter campaigns that end up being vaporware) and to give an impression of what it can become with more development time and effort. We’ll have more details about the launch in the coming weeks, but for now if you’re interested in the game, the best thing you could do is to sign up to our one-shot mailing list to remind you when we launch on Kickstarter (if you haven’t already)!

In other news this month, I’m very happy to say I’ll be working with Derek Restivo as an in-game character and environment artist. We’re working together on all the assets needed for the playable prototype and I very much hope we can continue to work together following a successful Kickstarter 🙂 Here you can see some of Derek’s work on implementing the dwarven character concept clothing into in-game sprites.

Character concepts with in-progress sprites
Character concepts with in-progress sprites

In other development updates, I’m currently working on a more detailed method of designing and placing rooms such as workshops containing furniture. Here’s a short video with a behind the scenes look at our furniture asset tool, which helps test out the metadata attached to a piece of furniture such as which tiles it covers or otherwise uses.

I’m hoping to shortly have workshops properly implemented so that the dwarves are able to process stone and logs into blocks and planks for further crafting or other constructions.

Finally, be on the lookout for our first article on worldbuilding in King under the Mountain which will go into some detail on how magic works and affects the world. This is to be the first of several articles that digs into the background of the world and lore in the game, to give us a solid basis for designing further mechanics and systems that contribute to gameplay. For now, here’s a sneak preview of an illustration of the magic system, created by Jeff Ward.

An illustration of the magic system
An illustration of the magic system

That’s all for now! If you’re in the UK or already visiting London at the end of March we’d love for you to drop by our stand at EGX Rezzed and say hi! We might even have some freebies to give away!