Godot Engine - Feature-packed 2D and 3D open source game engine.
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.
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
The Vote's Out - The free phone party game with friends
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
AirConsole - A new way to play games together with friends.