[berkeleynerd]

Either the classic "A Mind Forever Voyaging" or the Lovecraftian "Anchorhead"

https://en.wikipedia.org/wiki/A_Mind_Forever_Voyaging https://store.steampowered.com/app/726870/Anchorhead/

If you want to live these games vicariously I can also recommend the Eaten by a Grue podcast over at https://monsterfeet.com/grue/

[lowmagnet]

I am Perry Sim. The combination in that story between calculating the future in simulation and the outcomes of the project were chilling.