Age of Empires: Definitive Edition

Set up a game with a full tech tree, huge map, large resources and post iron age. Turn on the 'steroids' cheat. Have your villagers build a bunch of houses. Make a bunch of Horse Archers, select a large group them by clicking and dragging your mouse over them, and press delete. This will instantly kill all the ones you selected. Rinse and repeat. You will need to use the 'woodstock' and 'pepperoni pizza' cheat codes to replenish wood and food respectively.