Now that the dust has settled, I'll write my own thread about how to manipulate the RNG for the Item Printer! A fun date/time to start: March 21, 2039 12:14:42 PM (go 1-2s early) Print 1 for 9 Pretty Feathers and Ball Bonus. Immediately print 10 for a set... of regular apriballs!show more

The idea is that the game uses the system time as the initial RNG seed for the Item Printer. Adjusting the clock lets us pick our rewards! This method only requires a retail Switch. You need to be precise to the second, which is very humanly feasible. Same time = Same rewards

Important for this thread: - If going for rare balls, unlock Ball Bonus mode. - If going for regular items, unlock Stellar Shards. - All times given for this thread are the time that is used for the RNG. You'll need to click 1-2 seconds earlier depending on how fast your game is.

To start, enter the dialog with the NPC and hover over "I want to print something!" Minimize the game and set the date and time in the system settings. Clicking OK starts the seconds counting up from 0; it doesn't tick until you accept the time. Timezone does not matter.

The key to this manip is to ensure that once you click "I want to print," the game fades to black on the target second. You should calibrate to find out if you need to click 1 or 2 seconds earlier than the provided times. This depends on your Switch model and cart/digital game.

Once you enter the Item Printer, you can take your time. Usually you'll want to trigger a bonus mode, then repeat the steps for the items you want to get. When you're done, you can back out completely and talk to the NPC again. This is a faster method than rebooting!

Did you notice the video in the OP doesn't back out at all, and immediately throws 10 items in? Since we know how the RNG works, we can find seeds that allow us to put 1 item in, then put 10 in for all rare balls without backing out. Here are 2 more dates and what they give:

It's possible to manipulate RNG for regular items. Here are 2 dates for 5 Ability Patch rolls each when you print 10 items. With Item Bonus, you'll get a total of 14 Ability Patches! December 12, 2023 3:14:35 PM August 15, 2043 5:32:15 AM

And if you like Beast Balls, here are some times for 6 Beast Balls when you print 10 at a time. September 24, 2023 8:27:16 AM June 10, 2035 2:27:01 PM July 11, 2040 8:01:40 AM June 29, 2044 10:38:01 PM

If you're looking for specific items or bonuses that aren't being publicly posted, @Kaphotics has been working on this calculator to search for rewards. Check out the latest release to try it out!

You can use ItemPrinterDeGacha to show adjacent seconds to see how much you missed by, and search for bonus times or item times. Report real issues (not skill issues) with the program on GitHub. Contributions welcome too! (I reposted because new link for a new release.)

This has been a fun community endeavor! Public sharing of information allowed us to build on what others found. Many thanks to everyone who researched and shared their findings so we could all be wiser. I hope this helps you all on your rare item and ball hunts!

A final update... for a fairly comprehensive list of seeds for just about anything worth getting out of the Item Printer, see my page here: This also includes a lot of explanation for how to interpret and use the seeds more efficiently :)