| lost 't op - Dief in het donker | 2014 | Dorith Graef, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De weg naar Kinkel | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De tijd zal het leren | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De verjaardag | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - Fout met goud | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - Het geheim van de fontein | 2015 | Lotte Roep, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - Het oor van Van Dogh | 2015 | Lotte Roep, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Lost 't op - de verdachte vliegeraar | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De verdwenen taart | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Politiepaar van het jaar | 2015 | Jerry Schrikenberg, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De gestolen portemonnee | 2015 | Lotte Roep, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - Het oude kookboek | 2015 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - Sociale boeven | 2016 | Bas Schuddeboom, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De verdwaalde wandelaars | 2016 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op - De koffiezaak | 2016 | Ferdi Felderhof, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| De gouden stoffer | 2017 | Saskia Jonker, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| lost 't op | 2017 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Lost 't op - Posten voor een paplepel | 2018 | Bas Schuddeboom, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Lost 't op - Het bordenmysterie | 2020 | Bas Schuddeboom, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Lost 't op - Bankroof via de achterdeur | 2021 | Herman Roozen, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Lost 't op - Ping Ping-vaas in de sneeuw | 2022 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Scheve kast | 2010 | Evert Geradts, Jan-Roman Pikula | pencils, ink | Story | <1 | Holland | 4 |
| Treinreis | 2006 | Ricardo Makosi, Jan-Roman Pikula | pencils, ink | Story | <1 | Holland | 4 |
| Haaien | 2010 | Evert Geradts, Jan-Roman Pikula | pencils, ink | Story | <1 | Holland | 4 |
| Valentijn | 2009 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| De ontsnapping van Boris | 2009 | Ferdi Felderhof, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Kerstcursus | 2013 | Jan Kruse, Jan-Roman Pikula | pencils, ink | Story | 5 | Holland | 4 |
| IJskristallen | 2010 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 4 |
| Knappe Koppen | 2007 | Ferdi Felderhof, Jan-Roman Pikula | pencils, ink | Game or puzzle | 1 | Holland | 4 |
| Geiser | 2007 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Illustration | 1 | Holland | 4 |
| Untitled cover | 2007 | Jan-Roman Pikula | pencils, ink | Cover | 1 | Holland | 4 |
| Untitled cover | 2010 | Jan-Roman Pikula | pencils, ink | Cover | 1 | Holland | 4 |
| Robots | 2010 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Illustration | 1 | Holland | 4 |
| Untitled centrefold or poster | 2011 | Jan-Roman Pikula | pencils, ink | Centrefold or poster | 2 | Holland | 4 |
| De geheimen van de Wadden | 2013 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Illustration | 1 | Holland | 4 |
| Untitled illustration | 2014 | Jim van der Weele, Jan-Roman Pikula | pencils, ink | Illustration | <1 | Holland | 4 |
| Untitled illustration | 2014 | Jim van der Weele, Jan-Roman Pikula | pencils, ink | Illustration | <1 | Holland | 4 |
| Uit het handboek van de Jonge Woudlopers - Kever | 2019 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Illustration | 1 | Holland | 4 |
| als rekenwonder | 2022 | Jan-Roman Pikula | pencils, ink | Cover | 1 | Holland | 4 |
| Woudlopers Handboek | 2024 | Kristel Bosua, Jan-Roman Pikula | pencils, ink | Text story | 2 | Holland | 4 |
| De Hanzeschat | 2012 | Jan-Roman Pikula | pencils, ink | Cover | 1 | Holland | 4 |
| De stoutste dromen van Buurman Bolderbast | 2009 | Jan-Roman Pikula | pencils, ink | Illustration | 1 | Holland | 4 |
| Untitled cover | 2013 | Jan-Roman Pikula | pencils, ink | Cover | 1 | Holland | 4 |
| Décrpyte les empreintes | 2022 | Jan-Roman Pikula | pencils, ink | Illustration | <1 | France | 3 |
| Untitled illustration | 2022 | Jan-Roman Pikula | pencils, ink | Illustration | | France | 3 |
| Crée une oeuvre avec des feuilles | 2022 | David Melbeck, Jan-Roman Pikula | pencils, ink | Game or puzzle | 2 | France | 3 |
| Untitled illustration | 2023 | Jan-Roman Pikula | pencils, ink | Illustration | | France | 3 |
| Untitled illustration | 2024 | Jan-Roman Pikula | pencils, ink | Illustration | <1 | France | 3 |
| Castors Juniors - Les grandes aventures | 2023 | Jan-Roman Pikula | pencils, ink | Cover | 1 | France | 3 |
| Castors Juniors - Les grandes aventures | 2024 | Jan-Roman Pikula | pencils, ink | Cover | 1 | France | 3 |
| Computertaal | 2010 | Jim van der Weele, Jan-Roman Pikula | pencils, ink | Story | <1 | Holland | 3 |
| Kaart | 2010 | Jan-Roman Pikula | plot, script, pencils, ink | Story | <1 | Holland | 3 |
| Lost 't op - Sneeuw | 2012 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 3 |
| Lost het op - IJzel | 2014 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 3 |
| Les over elektronische muziek | 2014 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 2 | Holland | 3 |
| lost 't op - De burgerboef | 2018 | Bas Schuddeboom, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 3 |
| Lost 't op - De roestige roofridder | 2021 | Jos Beekman, Jan-Roman Pikula | pencils, ink | Story | 1 | Holland | 3 |
| Lippenstift | 2006 | Evert Geradts, Jan-Roman Pikula | pencils, ink | Story | <1 | Holland | 3 |
| Schilderij | 2006 | Evert Geradts, Jan-Roman Pikula | pencils, ink | Story | <1 | Holland | 3 |
| Sneeuwtor | 2010 | Frank Jonker, Jan-Roman Pikula | pencils, ink | Story | 3 | Holland | 3 |