Half Stairs may be crafted from Planks in the player's Inventory without the need for a Crafting Tables. It is used as an ingredient in many different recipes and can be used to create Sticks. It is commonly used as a construction material in Survival Mode for building shelters. It always drops itself when destroyed.
Acacia Half Stairs have been in the game since its release and remained nearly unchanged until Version 1.5. When Cube Life was ported to steam, the game got a graphical overhaul and the acacia plank received an updated texture. It now splinters into pieces when destroyed.