The Square Obsidian Wall is a nearly black dark-blue building-block with reddish-black debossed squares in the middle of the block plus short linking lines to the ledges on all 6 sides.
It can be crafted in your Crafting Menu (default key "q") after the according crafting recipe has been unlocked upon buying it in the Store as a part of the "Geometric Obsidian Bundle". You cannot obtain the crafting recipe in any other way.
To craft 8 (blocks of) Square Obsidian Walls, you'll need:
- 2 Obsidian Slabs made of Obsidian (bars) in a Processor
- 1 Glob of Goo crafted from Mold in the Crafting Menu or occasionally looted/pet-harvested from many Creatures
- 1 Iron Rod made of Iron Bars in a Processor. Iron Ore can be extracted from Nodes on the Stalactite layer underground, or found in Iron Treasure Chests or in Diamond Treasure Chests
The "Geometric Obsidian Bundle" itself also includes 100 already crafted blocks of Square Obsidian Walls additionally to the crafting recipe. These blocks can be claimed on one game world of your choice once.
Please note that you can only pay in the Store with Coins that can be purchased via Steam Wallet (also via Store). All crafting recipes bought in the Store are automatically permanently added to the crafting menu (and already unlocked), and will always be available on all Creativerse game worlds, even those that have the world option "world bound recipes" ("fresh start") enabled.