Every year during the Advent Calendar event, Chicken Smoothie releases special pet litters based off old designs with a new twist (ex. pets based on items).
First seen in 2009, these 'throwback' litters have recreated a multitude of site designs under different themes.
This guide will list each throwback pet alongside its inspiration. Pets are grouped by release year. The release dates of the original designs are listed below each picture.
This guide does not include Grown-Up PPS (GUPPS) pets. For a guide to GUPPS, click here.
For outcome names, see Pet and Litter Names.
For litters from 2009-2013, go here.
For litters from 2014-2017, go here.
2018
| Retrograde PPS (RPPS)
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| Archive
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Artists: Swiftalu, Yağmur, Jayfrost, Solloby, raey, Dia., Desmond, Saikiyo
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| These pets are PPS versions of pets that originally did not have growing stages.
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| Christmas 2015
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Halloween 2015
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| Christmas 2009
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Jungle Event 2018
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| Valentine's Day 2014
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Christmas 2016
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| Christmas 2016
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Christmas 2017
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| Valentine's Day 2016
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Christmas 2016
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| Slumber Party 2013
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| Archive
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Artists: Swiftalu, Yağmur, Jayfrost, Solloby, Desmond, Saikiyo, Simon
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| Halloween 2017
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Halloween 2014
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| Christmas 2008
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Halloween 2011
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| Halloween 2018
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Christmas 2013
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| Halloween 2016
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Jungle Event 2018
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| Halloween 2014
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April 2015
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| Archive
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Artists: Swiftalu, Yağmur, Jayfrost, raey, Bernouli
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| Christmas 2015
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Space Event 2016
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| Jungle Event 2018
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Halloween 2018
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| Christmas 2017
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Halloween 2018
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| Christmas 2016
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Halloween 2012
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| Halloween 2018
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Chinese New Year 2018
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2019
| Long Lost Littermate
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| Archive
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Artists: EmberWolf, Sorren Fey, Lacuna, Burrito Bunny, Saikiyo
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| These are new outcomes that fit in with previously released 2nd Gen litters.
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