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Ventilators provide oxygen only for the floor they are on, and the surrounding floors.  You can watch them in action in the "x" resource bars, there is one bar per floor.

I try to cover a wide spread from simple to complex, from easy to hard, from fighting to puzzle, but usually I have to have at least one technical challenge in it for me to program.

The disk version may not run on all C64, it has a fast loader integrated and may fail with a patched ROM on either C64 or 1541 - you can try the single load .prg s

You can usually find me on the EverythingC64 discord

The game requires true drive emulation on the TheC64.  Just rename the file to "mineshaftgap_AD.d64" and the emulator will use this mode.  The downside is, that the game load times are much longer.  You can solve this problem by saving a game state on the intro page, and for all future runs just load this game state.

It works fine on my C128 and on Vice in true drive and iec mode, but I can reproduce the issue on my TheC64.  I will let you know, once I find the problem.

I just verified again, that it is working by using a vice screen recording.  Without overtime the fuel tank lasts for 15 seconds and with overtime for 30 seconds.  So it seems to work.

You may have linkte the wrong video

You may notice that there is a .pdf as a downloadable item ;)

I made a little gif that should show the process of getting those lazy guys into gear:

If you can't build a mine, you have run out of metal.  The building menu shows the resources required for each building.  If the building is shown in red, you have a lack of resources, if it is blue you have not researched it yet.

I plan to release the source code in the comming weeks on github.  As soon as I finished documenting them.

New Bunker Control System 2.5 with the restart fixes is deployed.

The top floor has infinite oxygen, so the oxygen meter starts with the second floor.  Thank you for the bug report, I will look into the menu reset issues later to day.

Changed the color scheme of the various menues.

You may acquire more blueprints by radio transmissions, but you have to get the radio into gear for this.

You can only build into full rooms, this is just the way it is.

I will take a look into the colour issue.

Looks like you ran out of pickled people ... you might need to attract more dwellers with some addtional installations.

I am so far unable to reproduce the save problem. 

Removed the repeat cursor movement with joystick with bunker control system v2.2, give it a try.

Fixed version uploaded (should show "BUNKER CONTROL SYSTEM   V2.1" in the option menu).

Source code is now available

Having no native hardware split screen options on a C64 one is kind of limited on the art side, when trying to do smooth scrolling with an independent left and right display.

Not sure I understand your request.  Is the pdf not sufficient?

I take the "80's" as a compliment :)

You can find me on the "Everything C64" discord https://discord.gg/ff7eVaGBGa

There is a .d64 version over on csdb.dk

It is multicolor bitmap mode

Unlikely from my hand, but I will release the source code in some weeks

I usually hang around on the Everything C64 discord

Only the name is changed

Yes

unless you have a real c64, emulation is your best option 

With "z" or the bottom right joystick menu (the hourglas)

If I should ever get a 1351 emulation to work in VICE I would surely consider it

Yes, I really like this video

A cartridge version with cut scenes, more graphics, multi SID support, story, more units, multiplayer etc. would be an option, it this genre should resonate with a big enough C64 crowd

Just a quick snack game so far, if I would feel compelled to make a cartridge version, I would have the freedom to add more art sets

Just wait, it will return

I just added a more printer friendly version of the document, using black text and no background.  I hope this helps.

I would be delighted

You have to destroy the sentinels orbiting the artifact before you can collect it - which might be tricky because you don't want to shoot the artifact, and those sentinels have the ability to respawn as long as one of 'em is still in business.

The first galaxies are rather easy, but believe me, it does get harder if you progress - and yes, the bounty does also increase.  And don't forget, all the money you spend, will be back with you in the next live.