League of Legends Minion Memorial



Introduction: League of Legends Minion Memorial

About: Hi, we’re Dane & Nicole, two makers that create stuff, which we happily share with you!

A memorial for all the brave League of Legends minions giving their lives every day.


  • Raspberry Pi 4
  • NeoPixel Ring
  • 3D Printer
  • Clear filament
  • Drill
  • Box

Step 1: Project Video

Step 2: Guesstimate Minions Per Game

We start with the information provided on the League of Legends Wiki:

Minions start spawning from the Nexus at 1:05 and keep spawning in waves every 30 seconds for the rest of the match.

The next bit of information we need is the average game duration, luckily League Of Graphs is here to help. Based on their data we can assume that an average game takes about 30 minutes.

Going from there, we can calculate that the average game takes 30 * 60 = 1800 seconds.

It takes 1:05 or 65 seconds for the minions to start spawning, so 1800 - 65 =1735 seconds during which minions spawn.

Each wave takes 30 seconds, which means that there are 1745/30 = 57.8 waves of minions per game.
Because we want to be conservative let's make that 57 waves per game.

Using more info from the wiki we get the amount of minions per game:

Caster Minions
Three of them spawn on each wave.
3 * 57 = 171 Caster Minions per game per lane.

Melee Minions
Three of them spawn on each wave.
3 * 57 = 171 Melee Minions per game per lane.

Siege/Super Minions

For the first 15 minutes, one siege minion spawns every three minion wave.
900 seconds - 65 because of the starting delay of 1:05, so 845 seconds.
845 / 30 seconds per wave = 27.8 => 27 waves during the first 15 min.
One spawns every 3 waves => 27 / 3 = 9 Siege minions in the first 15 min per lane.

At the 15 minute mark, one spawns every two minion wave.
Between this and the next mark is 10 minutes, or 600 seconds.
600/ 30 = 20 waves.
20/2 = 10 Siege Minions in between the 15 and 25 minute mark per lane.

At the 25 minute mark, one spawns every wave.
We have had 27 + 20 = 47 waves so far.
There are 58 - 47 waves left and one spawns per wave, so 11 more Siege Minions per lane.

We don't include the Super Minions, as they replace the Siege ones later in the game and have a very similar spawn rate.

This totals 372 minions spawned per game per lane.

There are 6 lanes, adding up to a total of 2232 minions per game!
This is a conservation guesstimate, assuming all minions spawned will die...

Step 3: Guesstimate Games Per Day

The official League of Legends wiki states:

In January 2014, the game had 27 million active daily players

Each game consist of 10 players, and let's say each player plays at least two games:

( 27 million / 10 ) * 2 = 5.4 million games played each day

It's older data and a conservative take, but it gives a good idea.

Step 4: Guesstimate Total

With 5.4 million games played each day and a whopping 2232 minion deaths per game we total:

12.2 Billion Minion deaths each day...

To put that into perspective:
That's 141.479 deaths per second, and at this rate it takes about 16 hours to kill all humanity.
These numbers are all tricky to grasp, so for our memorial we're going to use the following one:

Every seven seconds, one million minions perish.

Step 5: Memorial Chest

With all that math behind us we can move on to the memorial itself.

We found this neat looking chest at a thrift store, but you can use any container you like.

For this step all we have to do is drill two holes, one in the lid and another in the back wall.

Step 6: Electronics and Code

With the chest ready we can add the electronics.
Pull the power cable for the Pi through the hole in the wall and pull the cables for the NeoPixel ring through the one in the lid.

Connect the NeoPixel ring to the Pi as described in Adafruit's great tutorial.

Everything is now in place to start writing our code.The code itself is attached.

We made the ring go from brightest it to dark in seven seconds, but you can make it do all kinds of light animations.


Step 7: Gemstone

The lights look great, but it's missing that League of Legends look and feel. To achieve this we 3D print this awesome gemstone by wslab. The only change we made is increase the hole in the gem to make sure our NeoPixel ring fits.

To make the most out of our bright lights we also print it with blue transparent filament.This kind of filament diffuses the light beautifully.

One thing left to do is glue the gemstone to the box itself, and with that our project is done!

Step 8: Result

Now the great sacrifice of the minions is respectfully remembered with this little memorial.
Every time the gemstone completes a cycle, one million minions have given up their life for our entertainment.

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