RADAR LINE_ by LDJam user 426074

[raw]
made by LDJam user 426074 for Ludum Dare 59 (JAM)

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⚠️ NOT PLAYABLE IN BROWSER ON LD SITE - Please use the Itch.io link below.

RADAR LINE is a strategic air defense simulator that focuses on signal processing and tactical resource management. The core gameplay loop involves detecting, identifying, and intercepting aerial threats within a multi-tiered radar network.

Key Mechanics:

• Signal Identification: Implementation of “identification delay” logic. Radar systems require varying amounts of time to classify signals and gather data for decision-making.

• Interception protocols: engaging ballistic, cruise, and unmanned targets using specialized SAM (surface-to-air missile) batteries, taking cost-effectiveness into account.

• Infrastructure management: post-mission analysis of cost-effectiveness, interception success rate, and the structural integrity of defended facilities.

• Technical limitations: The simulation accounts for radar rotation speed, signal identification delay, and various missile engagement ranges. Early threat classification requires strategic sensor placement outside the engagement range.

CONTROLS (MOUSE ONLY):

• LEFT CLICK: Build, select targets, move installations, and navigate the map.

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Ratings

Given 100🗳️ 110🗨️

Feedback

MountainGoose
Apr 21st · 01:22 UTC
Cool entry! Clean display/icons and audio is great. My only complaint is the "target locked/damage confirmed" playing for each of the group of 4+ missles. Well done!
Lizz
Apr 21st · 01:48 UTC
The style is very fitting the gameplay, I did struggle in understanding what I was doing but got the gist of it after trying out some. Did not finish the game seeing as my brain is fried but definitely understand the theme in it! Radars are a common thing with the theme, but to me it looks like you all took it a bit further to not only identify but do something about it. A clear win/lose condition is stated which gives the player structure. The comments that were made during the 'play' phase if that is a correct term made me more drawn to it and want to put more effort in. I struggled with the quality and clearity of the text in the game itself graphics wise. Did neither understand what everything did so might have put too much money in signal towers :laughing: I do agree on the repeated missiles comment above per group though it felt more realistic in this way. So it is deciding what feels better.
FoxEcho
Apr 21st · 01:53 UTC
A very original idea. I liked how the radar range and the attack are separated.

At first I was a little unsure what to do, so a bit more guidance at the beginning might help. When many enemies appear at once, clicking them one by one also felt a little hectic for me. I was not sure if that was intentional or if I had missed something.

The visuals and sound work well together. It feels clean and nice.
ofoof
Apr 21st · 02:12 UTC
If I could change one thing it would be separators between the zeros for purchasing costs. your wallet has separators, but the costs doesn't and the stylization (which looks really good) makes it harder to read the zeros
Nikorych
Apr 21st · 09:36 UTC
It took a while to figure out how to shoot down missiles.
Overall, an interesting idea, I liked it.
JulienLussiez
Apr 21st · 13:32 UTC
I really like the presentation of this one. I like to play at a big scale, seeing the world.
Shlolo
Apr 21st · 15:06 UTC
I'm honestly amazed with how polished this entry is. Everything from the visuals to the audio looks and feels very well made. I did struggle a bit with understanding what I need to do though. Only after trying around for some time did I figure out the gameplay completely. It is a very cool take on the Signal theme though. Nice job!
Lenny Rudeberg
Apr 21st · 20:18 UTC
This is a very well thought out and put together game. Great sound design and atmosphere too, almost felt real. GG!
WeirdBitGames
Apr 21st · 21:23 UTC
I got this when trying to play on the LD website:

![uhoh.png](///raw/5e7/f4/z/72237.png)

It worked fine on itch.io.

Holy moly the visuals are radio call audio is incredible! It really draws you in!
Vilumpulump
Apr 21st · 21:39 UTC
@weirdbitgames @shlolo @lenny-rudeberg Thanks! We put a lot of work into the visuals and audio, so we’re thrilled you enjoyed them!

We’re not sure why the LD player is still glitching, but please use the Itch.io link - it works perfectly there.
artillepsy
Apr 21st · 22:08 UTC
Plus for web version; plays good, feels good, looks expensive - I like it. Has a good indie potential. Even though I am not a fan of strategies
hammy275
Apr 21st · 22:56 UTC
The atmosphere of this game is great, both in matching the theme and for drawing you into the world! I also greatly enjoy the unique gameplay experience here, the combination of tower defense and somewhat real-time strategy! This is an excellent concept, and I would be interested to see this expanded into a more fully-featured game!

I find the balancing of the different radar stations and SAM batteries odd. I found the highest priced radar to be of little use, given its slow rotation speed. Whereas many medium-sized radars can cover similar ground and get information faster and more often due to sheer quantity. Similarly, the high range on the more expensive SAM batteries is great, but they get neutered due to the very high cost to fire a missile from them. Medium sized batteries seem much more effective both in placing more of them and in firing missiles, especially given the few amount of objectives that need covering file.
5n4k3
Apr 21st · 23:08 UTC
Amazing audio and graphics, incredible game overall!
WhoIsEthan
Apr 22nd · 02:13 UTC
Cool game, one thing I noticed was having some trouble with moving defenses, I'm a bit indecisive so moving around the defenses in the web game made the game scroll at the same time whihc was a bit buggy. I'm not great at strategy games / tower defense style games but I found it fun to play.

Overall the game worked as expected and as expected I died on the first level.
thormoth
Apr 22nd · 02:22 UTC
Love the visuals, gameplay is great as well although could use some balance tweaks as others have said. Really solid entry for a jam!
stepa
Apr 22nd · 04:12 UTC
Awesome visuals
Eugenik
Apr 22nd · 04:33 UTC
The core loop involving the radar network was incredibly engaging. It's really effective how you tied the technical concept of signal identification delay into a high-stakes defense scenario. This systemic depth makes for a very thoughtful and unique gameplay experience.
nyxkn
Apr 22nd · 07:11 UTC
Super cool presentation and visuals! Really well made. Only complaint is that fonts were a bit small, and having to read a page of complicated instructions before playing is a bit tedious and I'd have rather seen a small interactive tutorial!
draki
Apr 22nd · 08:33 UTC
Extremely engaging, the game management is excellent, and you really feel the pressure with a great audio !
Tymus
Apr 22nd · 09:15 UTC
really cool presentation but I don't think I managed to shoot a single missile, I had identified targets but clicking them didn't so anything. unsure of what I did wrong

![2026-04-22-11-06-420-ezgif.com-optimize.gif](///raw/7c2/z/723d6.gif)
Vilumpulump
Apr 22nd · 09:37 UTC
@tymus thanks for the feedback! We are working on improving the interface to make it clearer.
To intercept a target, after selecting it, you need to click the specific option in the context menu (in this case, the 80% chance button).
LDJam user 426288
Apr 22nd · 10:54 UTC
At first, I didn’t really understand the gameplay and thought it was a tower defense game. Later I realized it requires clicking targets with the mouse. I feel like adding some guidance would help a lot 🤔
ToSMaster
Apr 22nd · 12:34 UTC
A very cool and very interesting game! In our submission we also tried to emulate the "you-work-at-a-screen" view. But you defs beat us in execution! Great job on the interface and mood!
The CRT filter and scan lines are really well made! Love it!
Regrettably I also struggled with how to fight enemies. I thought I had it with fully stocked arsenals (e.g. 8/8) and a radar nearby. So I thought they'd shoot autonomously and I only had to pay for restocks.
Then I found out how to shoot and was told I had no money. I took heavy damage and the downward spiral started. I had not enough funds to defend for long. :(
Ulziton
Apr 22nd · 15:52 UTC
Very cool game, amazing job
JonasOlsson
Apr 22nd · 17:38 UTC
Nice game! As others have already pointed out it was hard to understand the UI, I was just going to give up but read through some comments and understood how to lock onto targets. After that it was a nice challenge! Over all great game and good job! For next time, remember that the attention span for a lot of players can be limited, there are a lot of games to try and if it isn't intuitive enough it's easy to just move to the next one. That said, I'm glad I didn't;)
LDJam user 0
Apr 22nd · 17:51 UTC
It's a good game. It perfectly covers the theme. The sound and graphics work well together.

However, there are a couple of drawbacks:
- The game is loud. The clipping effect, where multiple missiles appear on the radar at the same time, is particularly ear-splitting.
- The game is poorly optimized, with a browser FPS of ~10. Even 3D games run smoothly.
Tryam
Apr 22nd · 17:53 UTC
The graphics are decent, and the theme is well-developed.
The sound needs some work; it's quite loud. Also, the game glitches in full-screen mode in my browser, making it difficult to read the text.
Thanks for the gaming experience!
LDJam user 240296
Apr 22nd · 18:14 UTC
Cool idea and authentic graphics, nice gameplay flow. Amazing result for the jam!
GARYglhf
Apr 22nd · 18:32 UTC
Очень оригинальная идея.Пришлось повозиться, чтобы разобраться. Музыка очень понравилась, создает атмосферу.
eklender
Apr 22nd · 19:16 UTC
very engaging, didnt notice how much time had passed while i wast trying to figure out the best configuration of radars and weapons. the visuals and audio are very immersive
Alex de la Cour
Apr 22nd · 22:00 UTC
![Screenshot 2026-04-22 225712.png](///raw/b9f/84/z/7261b.png)
I made it, just about! It took me 2 or 3 tries to realise how to actually shoot the missiles, but once I got the hang of it I enjoyed this. It was a good difficulty level - I had to think a bit but it felt achievable. Using money to fire missiles perhaps felt a bit unfair. But overall I had a good time playing this, and I especially liked only being able to fire on a target when they were in the blip of a radar - a cool and interesting design decision!
Xientra
Apr 23rd · 08:37 UTC
I really dislike that I have to click EACH enemy attacking and sometimes multiple times. Otherwise very well done. Graphics are sick, gameplay with radars and defence systems is really well done and innovative.
Enver Arco
Apr 23rd · 08:43 UTC
Very well made. Voice overs are really well done!
nicardo
Apr 23rd · 11:10 UTC
i scrolled and clicking on the gif :D
franklyn01
Apr 23rd · 18:55 UTC
One of the most polished games i've played so far! Graphics look really satisfying and together with the audio it really reminds me of the strategy games of my childhood :D The text was unfortunately very small on my small display. Overall very nice entry!
anku
Apr 23rd · 19:08 UTC
Хорошая игра. Четкий визуальный стиль, тематическое звуковое сопровождение.
RenD
Apr 23rd · 19:44 UTC
Man the production value is just impressive. The sound design itself is just worth playing the game, I felt immerse from the beginning. The gameplay is hard and unforgiving but the more you play, the better you get at it. Having small radars compensate their small range with a higher rotation speed is really a good idea. This game reminds me of an old game called Defcon, but it looks even better. Really polished entry, congrats!
IRKAR
Apr 24th · 08:08 UTC
Great visual and i love sounds also music. Good job!
Zathnic
Apr 24th · 15:11 UTC
A bit unintuitive to figure out how to attack enemies, but the vibe is really good!
Dywanix
Apr 24th · 19:00 UTC
I really love the vibe
Grummelchen
Apr 25th · 20:20 UTC
Incredible game, with the war in Ukraine, this had a very surreal and depressing feeling. Not to diminish the game in any way, quite the opposite. It’s impressive to convey the stress and feeling of threat in a medium like this.
unfavorable_enhancer
Apr 25th · 20:43 UTC
I loved the DEFCON vibes this game gives. The execution of visuals and sound is perfect! Only issue about it I can say is that I think UI needs to be scaled up, as it's can be a little hard to read the info due to screen shader. Gameplay-wise I didn't really liked how destroying targets works. It also costs money which feels excessive as rocket launchers also cost money to place and have limited ammo anyway. And clicking every enemy to shot rockets at them feels pretty awkward. But overall it's pretty cool experience.
🎤 LDJam user 426074
Apr 25th · 21:13 UTC
@grummelchen Thank you. Our whole team is Ukrainian and currently in Ukraine, so this is very personal for us.
LDJam user 424326
Apr 26th · 05:53 UTC
The game looks good, but it’s too difficult on the first run. It lacks an initial tutorial.
skiddings
Apr 27th · 21:55 UTC
Very, very impressive. Visual are great, the audio is great, the gameplay is pretty solid. Took a few attempts due to me overspending. Needs a way to refund placed items if you did so by mistake. Needs a little balancing but considering the time frame of the jam it's very good.
DenisSobolev
Apr 28th · 11:48 UTC
Wow! This is cool! I like how gameplay works with setting and visual. I wanna full game on steam.
Abiral
Apr 28th · 15:55 UTC
cool visuals and loved the graphics, enjoyed the gameplay too.
daupoh
Apr 28th · 21:35 UTC
It reminds me of an arcade game that John Connor plays in Terminator 2.
Awesome idea and decent realisation. Nice graphics and atmospheric sound design, with simple but slightly strategic gameplay — I enjoyed playing it.
The only things I missed: the selected unit should be focused after spawning, and I’d like to have hotkeys to temporarily turn off the radar rendering.
Gecko64
Apr 29th · 06:56 UTC
A very cool idea for a game, I loved the graphics and gameplay! The only thing I could complain about is the lack of explanation at the start but other than that good job :)
ThunderChief
Apr 29th · 07:23 UTC
Had a good experience. Game has potential and I like the artstyle, sound, and also this overall gendra of games. The radar and shooting are really working nicely. It is a great Jam entry.

However, I have a few points which were frustating to me.

To start, the game is way too hard as of now. I like difficult games. But here somethings just feels unfair.

For example, why should I pay for missiles which are already loaded in the launchers ? I understand the mechanic of having to pay for ammo, it is a nice and realisitc addition, but it makes more sense that i should pay for the refill, not for missiles which are already there lol. I can literally see the 8/8, yet i can't fire because no money. My man, the missiles are already loaded thus paid for, just launch the damn things already. I felt robbed.

The Titan is wholefully too costly. I take it it is an equivalent of the patriot, which is expensive indeed, but you can literally have only one on the whole map if you plan on having any meaningful other defenses. If the price stays the same, which would be understandable, maybe increase the range a bit.



Otherwise very good game. If some of the points i said are addressed in anyway, i would gladly play it again
Vilumpulump
Apr 29th · 09:22 UTC
@thunderchief thank you for such a detailed comment!

Our team did discuss the issue of paying for missiles pre-loaded into the launcher, as it does seem illogical. However, we decided to keep this feature as a gameplay mechanic to give players more control over their resources (budget). Specifically, this refers to the ability to pay for individual shots rather than purchasing an entire supply of ammunition at once, which they may not need right now.

Nevertheless, we frequently receive feedback regarding this mechanic, so we are currently exploring various reload options for the next update.
LLlarsO
Apr 29th · 14:04 UTC
First I was overwhelmed by your first page picture, but I gave it a try and it was absolutely worth it!

Having a small tutorial level to explain the controls (shooting mechanic) would be a very important addition, because I had to read the comments to figure out how the game works after already playing for a while. That would garantee more accessibility for the players here in the jam.

But apart from that the game has a lot of strenghts! The atmosphere was well done! The music added to the suspenseful mood and the graphics are clear and the UI elements worked fine. You always knew which unit would shoot, when multiple units were able to shoot. Having voice lines in the game gave me old RTS-vibes, which is always a good thing. I think it would be smoother if there were a short pause between the voice lines when several hits happen back to back.

Having different defenders with varied strenghts added tactical depth.
I really appreciate the clickable UI elements on the left side when an enemy is spotted. That helped a lot to get an overview and is a nice quality of life element. :)
Artur Hawkwing
Apr 29th · 23:50 UTC
Things I loved
- graphics
- voice overs -- these added a lot to the mood
- use of the theme -- radar was awesome here

Things I found hard
- I placed defensive units, but it did not seem like they were attacking the enemies.
NuclMe
May 03rd · 09:38 UTC
I was really drawn in by the screenshots—the visual style looks super clean and the radar mechanic seems like a very clever take on the theme. I was genuinely excited to jump in and try it out!
Unfortunately, I’m running into a technical snag on the itch.io page. When I try to load the game, I get the following error in the browser console:
Uncaught (in promise) Invalid binary data file size! (offset=4970976, size=6674983, file length=5019808). Maybe i am trying to open incorrect version?
Vilumpulump
May 03rd · 10:38 UTC
@nuclme Honestly, I'm not sure what's causing that specific error since it's running fine on my end.

I'd suggest trying it in Google Chrome on a PC, as we haven't tested it for other browsers or mobile devices yet. Sometimes clearing your cache or using Incognito mode also helps with loading issues on itch.io. Hope you can get in!
AO-85
May 07th · 01:30 UTC
A very cool idea for a game, I loved the graphics and gameplay! The only thing I could complain about is the lack of explanation at the start but other than that good job :)