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Sometime ago, Josh Millard made the PICO Junior.
A few days ago, sta64 found out about PICO-8's Screen Resolutions.

I had the idea to combine the ideas, so I present the PICO Junior (Jr. for short) Challenge.


  • 4 colors in total (transparency doesn't count)
  • Must be 64x64
  • One Player
    Everything else? Fair Game.

To make sure that the games are easy to find, I've got 2 ideas:

  1. Put them all in this post.
  2. Tag them with "picojr".

I've got an example cartridge, lemme know which method would be easier.

P#15032 2015-10-06 08:04 ( Edited 2015-11-09 22:24)

Cool idea. So, does the Pico Jr have a d-pad and 1 button or 2 buttons? Also, does it have the same music capabilities as the PICO-8 home console? I'd think not!

P#15050 2015-10-06 15:17 ( Edited 2015-10-06 19:18)

2 Buttons, and the same sound capabilities.
Let me take an example: PICO-8 is to PICO Jr. as NES is to Game Boy.
NES had 5 channels, Game Boy had 4 Channels.
They both had the same controller configuration.

P#15059 2015-10-06 16:19 ( Edited 2015-10-06 20:19)

Josh's original post seemed to say otherwise:

  • 2 channel sound
  • dpad and one button (other button could be reserved for meta-game/menu stuff)

Unless you're adjusting things slightly for this challenge.

P#15060 2015-10-06 16:23 ( Edited 2015-10-06 20:23)

I am, because one button is insane.
However, I didn't say "You HAVE to use all channels/buttons". ;D

P#15062 2015-10-06 17:01 ( Edited 2015-10-06 21:01)

So how are we going to do this? Take joshmillard's PICO Jr. cart and replace Jump Guy with our game? Or just write an independent PICO-8 cart that obeys the restrictions given?

Either way I'd like to have a go. :)

P#15063 2015-10-06 18:12 ( Edited 2015-10-06 22:12)

Link to screen resolutions is wrong (it goes to Jr)

P#15070 2015-10-06 19:22 ( Edited 2015-10-06 23:22)

Cart #15273 | 2015-10-11 | Code ▽ | Embed ▽ | No License

"Take the fun of Jelpi on the go!"

-Z/Up to jump
-X to dash
-Left and right to move the character.

Here's the example cartridge, how is it?

Version 3: Snow Level, with a little secret ;)

Version 2: added a level, and traps too!

P#15073 2015-10-06 19:53 ( Edited 2015-10-11 18:21)

That's fantastic!

P#15076 2015-10-06 21:19 ( Edited 2015-10-07 01:19)

As much as I am happy that PICO JR is part of the inspiration here and am 100% okay with people cannibalizing whatever bits of the cart or my thinking they like there, I've got zero sense of ownership over the core idea itself so I figure people should do whatever feels natural.

People making wacky handheld downgrade games: good outcome whatever form it takes.

P#15083 2015-10-07 11:40 ( Edited 2015-10-07 15:40)

@joshmillard Thanks! It's good to know this is fine with you.

To beginners: Though I am a beginner myself, if you find the graphic capabilities of PICO-8 too limiting, DO NOT TRY THIS.

I hope that others will do this challenge, though.

P#15087 2015-10-07 13:21 ( Edited 2015-10-07 17:21)

Jelpi Junior is pretty cool, but playing it suddenly reminds me of how many Game Boy games tried to always keep the camera aimed a bit ahead of the player. Donkey Kong Country 3 is a good example.

P#15120 2015-10-07 21:03 ( Edited 2015-10-08 01:03)

Did someone say cameras? :)

P#15127 2015-10-08 00:45 ( Edited 2015-10-08 04:45)

@tbsp ! wow what a great read!! thanks!

P#15128 2015-10-08 02:18 ( Edited 2015-10-08 06:18)

I updated Jelpi Junior with an Underground level...because every platformer needs one.
Also, Lava and Spikes(They were originally in the Jelpi ROM!), due to the game feeling a bit easy. Because of these, I also made warning signs (Like in the Game Gear version of Sonic).
How about extra lives? Good, because every 10 points you get, you'll get a life.

P#15162 2015-10-08 20:53 ( Edited 2015-10-09 00:53)

Version 3!
This one adds in a snow level, which may or may not have a secret in it.

P#15274 2015-10-11 14:21 ( Edited 2015-10-11 18:21)

Cart #16250 | 2015-11-05 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

P#16251 2015-11-04 21:48 ( Edited 2015-11-05 02:48)

I have no words.

Welp, that just made my day.

P#16252 2015-11-04 21:55 ( Edited 2015-11-05 02:55)

Cart #16288 | 2015-11-06 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

Boot screen

P#16290 2015-11-05 20:07 ( Edited 2015-11-06 01:07)

Jelpi Jr. doesn't reset the level if you die. it's possible to get permanently stuck on the underground level if you accidentally break blocks, with that random invincible powerup. xD

P#16466 2015-11-09 17:24 ( Edited 2015-11-09 22:24)

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