How to Make Floors and Stairs in Grounded
To unlock floors and stairs Grounded, you must first complete all main story quests that are currently available in the game. This means that you must play until the point where you fix the Mysterious machine and investigate the oak explosion. After reaching the Oak Lab, you will meet BURG.L, which offers you daily missions that reward Science brute. BURG.L can teach you news craft recipes, but you have to find a chip with the info loaded on it and give it to it before you can unlock anything. Fortunately there is Grasslands BURG.L chip just lying on the floor next to it which contains some useful recipes.
Pick it up Grasslands BURG.L chip and talk to BURG.L. Select " I found a BURG.L chip " followed by " I'll trade you raw science."A list of recipes will now be available for purchase, but the one you're looking for is Multi-storey bases. It costs 1000 raw sciences, but you will learn the soil recipe and the stairs recipe. To create a floor in Grounded, you will need four Grass planks, which can be obtained by cutting blades of grass with an ax. To create stairs in Grounded you will need four Grass planks and a Weed stalk. If you don't have enough Raw Science to afford multistage bases, you can get Raw Science by completing BURG.L's daily missions. You can also find Raw Science while exploring. Just enter any pink drops meet you to be rewarded with raw science!