Advance Through the Ages in Craftopia
One of the main progression systems in Craftopia involves advancing through various ages of technologies, with each age offering new items that players can craft. To advance, you need to have built and placed an Altar of Civilization, and then you have to pay a certain amount of money and materials to it. The exact items you need to pay vary depending on which Age you're on, but they'll all be something you should be able to collect/craft. Each new age has their benefits, but the Frontier Age and the Renaissance are particularly noteworthy because they both offer buildings that you can use in automation, allowing you to quickly and automatically harvest resources.