During the pandemic, I joined my close circle of school friends in a few games of Neptune's Pride. It's a sort of slow paced sci-fi diplomacy simulator; you move ships around, trade technologies and partake in overly complicated plots. It was brilliant and surprisingly informative. Here are some simulations I ran in a scaled down version of it. The rules are pretty basic; there are stars, they produce ships, players send carriers around to collect these ships and occupy the stars, they gain 1 new carrier per turn. Most importantly, the AI's can message each other, usually with the aim of forming an alliance. The saves are ordered in terms of turns (i.e. the longest games are at the top). It went pretty much as you might expect. One surprise; grok consistently descends into a strange shorthand after enough turns. Overall, it's quite brittle and has many things I would change were I to do it again. For one thing, the JSON files were probably the wrong format to serve information to the LLMs with. As far as weekend vibe coding goes, it was immensely fun.
LLM Diplomacy Space Sim
Engulfed Lineages
Inspired by Conway's Game of Life. More of a proof of concept than a finished thing. The basic idea was to see how difficult it might be to build artificial 'organisms' with some basic traits (attraction towards prey, avoidance of predators, max size before division etc) and see if one profile of traits dominates. Never settled on a final rule set. There's some rough genetic drift (10% per trait with each division). Daughter cells have a slightly different hue from their parents.