[DiHalt 2021] [Vintage Computing Christmas Challenge 2021] [Silly Venture 2021 Winter] [Demodulation 2021] [Xenium 2021] [Chaos Constructions 2021] [Out of Compo 2021] [Lost Party 2021] [Outline 2021] [@zxgfx compo #4] [@zxgfx compo #3] [Revision 2021] [@zxgfx compo #2] [Lovebyte 2021] [Chaos Constructions 2021 Winter] [@zxgfx compo #1] [Demodulation 2021]