by Vivid Helix
[gfycat data_id="ElasticAcidicBorer"]
Semisphere is a stealth puzzle game where you control two characters which affect each other’s worlds. It recently went through an art change (old art style here), and the developer has written a bit about the methods used to create the different effects (in Unity).
You can go through the dev log on the TIGForums, or read about the heat distortion effect here, and the portal effect here.
[gfycat data_id="MedicalSelfreliantCockerspaniel"]via /r/gamedev