Unity - The multiplatform game creation tools for everyone.
The Jackbox Party Pack - The Jackbox Party Pack is a Trivia, Education, Co-op, Single and Multiplayer video game created and published by Jackbox Games Inc.
Godot Engine - Feature-packed 2D and 3D open source game engine.
The Vote's Out - The free phone party game with friends
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
AirConsole - A new way to play games together with friends.