Ludum Dare 36 — August 26th-29th, 2016 — Theme: Ancient Technology

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by rnlf - Competition Entry

PHOSPHORUS is one of those games you play on an ancient oscilloscope screen, just like the famous "Tennis for Two".

Since you probably don't have such a device, I made it run in LÖVE instead.

How far can you climb the tower?

A few hints:
* You can jump higher when you go faster.
* You can create combos by at least twice in a row skipping one level of the tower. You can get really high scores that way!

Downloads and Links


Patrick says ...
Aug 28, 2016 @ 8:40pm

Controlling the phosphorus does not feel very well. It's kind of clumsy. Play 'Icy Tower' and you'll know what I mean. Otherwise not too bad. But how did your game fit the theme?

rnlf says ...
Aug 28, 2016 @ 8:49pm

@Patrick, it says it right there in the description text.

steph88 says ...
Aug 30, 2016 @ 6:31am

Hi, nice game and congratulations ! We're realizing a video with several games of the Ludum Dare #36. We made the same thing at the previous jam.

Can you add your game on ? (it's free)
So we can include also your game in the video ;)
p.s. write #LDJAM in the game's description.

blubberquark says ...
Aug 30, 2016 @ 1:06pm

Error: crt_renderer.lua:11: Invalid texture format: r32f
stack traceback:
[C]: in function 'newCanvas'
crt_renderer.lua:11: in function 'new'
lust/classic/classic.lua:63: in function 'CRTRenderer'
main.lua:7: in function 'load'
[string "boot.lua"]:406: in function <[string "boot.lua"]:399>
[C]: in function 'xpcall'

Is my löve 0.9.1 too old?

blubberquark says ...
Aug 30, 2016 @ 1:28pm

Ok, upgraded to löve 0.10.1 runs now!

Best game feel so far! Nice CRT effects!

Tijn says ...
Aug 31, 2016 @ 2:30pm

This is a cool, albeit simple, little game. I like the graphics a lot! Managed to get a score of 4580, I'll try again for more points as the game is pretty addictive!

Martins says ...
Aug 31, 2016 @ 5:15pm

Nice visuals, the game's hard :D

Sep 2, 2016 @ 3:45pm

Wow, I had no idea such things could be done in LÖVE (shaders and such). I thought it was just for drawing 2D sprites with alpha blending at best :) I need to check it out some more before the next LD.

Great little game that I badly suck at. But the retro feel is definitely there, being as difficult as it is, and the "just one more try" effect is there too. Could work well on mobile, perhaps?

euske says ...
Sep 3, 2016 @ 12:31pm

Simple yet addictive game play. I managed to get 1520. I know I suck but it was fun anyway!

g12345 says ...
Sep 4, 2016 @ 10:02pm

Yes, simple but very addictive gameplay... I've played it couple of times, as I actually never really played this kind of games before... :)

Tegu says ...
Sep 5, 2016 @ 8:15am

Addicting and still somewhat frustrating game.

The ball moves so quickly that hitting the platforms feels hard. I guess that's intentional, as the game would probably be a bit easier if the ball moved slower. Perhaps an analog controller could be easier for fine-tuning those jumps. I often overshot my correction moves and fell down in panic. On the other hand, too slow controls could make it hard to reach platforms that are further away. Balancing, balancing.

The glowing oscilloscope effect is really neat. It also actually helped to see how high the ball had been and whether you could reach a certain platform or not. Maybe it also helped to locate the ball, as its size was quite small without the glow. On some one older machine only the background grid was visible, probably due to the shader effect. But it doesn't really matter that the game doesn't work on some Ancient Technology. :P

At first, I tried to press the jump midair to jump immediately after landing. But it turned out that it was not possible, and I had to wait patiently for landing before jumping again. At least the combo does not break right away althoughn you cannot sit down either.

Reaching large combos is quite hard because the camera does not follow you so quickly. Thus, I ended up going offscreen on the top without any clue where the next platform would be. Sometimes I hit the next one blindly, but mostly I had no time to move to the next platform until it was too late, let alone continue the combo. Maybe I should just aim for combo streaks by waiting for a while until I'm nearly at the bottom. Of course, finding good ways is a part of the game. :)

Best score: 4860.. wait no, made it better! 5350

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