Allchemy

Allchemy takes the classic element-combining game idea and pushes it much further by removing the ceiling. You start with a small set of basic items and drag them onto each other to see what they create; every successful combination unlocks a new node you can then use again. Because the combination space is effectively unbounded, the loop is discovering surprising recipes rather than racing to a fixed goal.

What makes it an AI game is the way unknown combinations are handled. Instead of refusing anything outside a handwritten crafting tree, the game can produce results for pairs nobody has tried, which gives the whole item pool a generative, exploratory feel. A built-in Itempedia records what you have discovered, so your personal catalog grows into a reference you can browse.

Allchemy is also social in a light way. You can create or join a Party and collaborate on a shared canvas, so several people can work on the same board of items. The free experience is supported by ads and energy limits, while paid Premium tiers raise energy, allow more simultaneous recipe mixing and remove ads.