science Dark matter distribution, structure and content in galaxies Satellites galaxy evolution of satellites in groups and clusters data Data I/O streamlining interaction with simulation data Visualisation rendering simulated galaxies for science & enjoyment collaborations MHONGOOSE deep, targeted 21-cm radio survey at MeerKAT MIGHTEE-HI deep, blind-pointed radio survey at MeerKAT SKAO next-generation radio observatory, completion ~2030 SWIFT astrophysics simulation code and ecosystem of tools Virgo consortium for cosmological supercomputer simulations Wallaby wide-field 21-cm radio survey at ASKAP