Unreal Engine 4:

UI:

• Stop Esc closing PIE, so you can use it for an Esc menu in the editor

• Gamasutra Article: "Animated Loading Icon In UE4 UMG"

• Splitting text onto separate lines in one text field (aka line breaks)

Lighting:

• UE4 baked lighting tips

Game Postmortems:

• Gamasutra Article: "Indie Dev Story" Postmortem

• Gamasutra Article: "Rage" Postmortem