Supplementary Videos and Documents of Chapter 4 (Short- and long-term strategies for the evolution of nascent multicellular life cycles) of the PhD thesis: Bacterial collectives: from group formation to units of selection. Supplementary Videos show simulations of accumulation of mutations in population of lineages given different lineage-level death dyanmics. Supplemenatry Documents show alignments of Pflu1657 and Pflu1655 proteins. Details of the captions are provided in the main text.