Behind-the-scenes look at motorizing an Iron Man suit arm, showcasing the 3D printing process and mechanics involved.

Roblox has no trouble attracting players, but profitability is another story. With steep losses and a premium valuation, investors need to watch these three levers closely.

The game was primarily made by the two-man dev team of longtime friends Alan Gabbard and Joseph Duke, with some help from other friends along the way. It’s the first release for their company Positive ...