https://steelraven7.itch.io/ravenfield
Sandbox game, hilarious ragdoll physics, everything kept simple and right to the essence of why it exists in the game - and as many bots on the map as your computer can handle: hundreds and hundreds, one thousand...!? Sounds like good fun. I already had some good laughs from just watching some of the videos.
Minimum specs: Win XP
, 2 GHz CPU
Recommended: Win7, Linux
, 3 GHz CPU
Indie game by one guy only. He does the same for the medieval currently. Title is "Totally Accurate Battle Simulator" (Alpha status currently)