Infinite Craft

Neal Agarwal's Infinite Craft starts everyone on the exact same four elements, Water, Fire, Wind, Earth, and turns the entire game into dragging pairs of them together to see what an AI decides they combine into, a discovery tree that in theory never actually runs out of new results.

Because combinations follow loose associative logic rather than a fixed recipe list, working through the game's earliest, most obvious pairs first, Fire plus Water, Earth plus Wind, tends to unlock the broadest branching set of follow-up elements rather than fishing randomly for a specific rare result. Revisiting an element discovered early against a newly unlocked one further down the tree is often how the more obscure, surprising combinations turn up. Little Alchemy 2 runs the same element-combining premise with a fixed, discoverable recipe list instead of AI-generated results.