Thunderday is a twin stick shooter game developed by RobotCat Games, available on Windows. The game follows a group of friends and family who, while playing a board game, find themselves in a gunfight with an unknown enemy that looks out of this world. The players must choose their hero and start their journey to venture to unique planets and locations, all with different environments and enemies, to find and destroy the one responsible for all the destruction.

Thunderday offers a unique feature where every hero comes with its own and unique defensive special that protects the player against bullets, adding an extra layer of strategy to the gameplay. Additionally, the game also includes an endless version of a level from Thunderday transformed into a space action high score game called Asteroid Blaster.

Originating as a game made for a group of friends during a board game weekend, Thunderday has grown and expanded to become a full-fledged game. With its unique defensive specials, challenging enemies, and diverse environments, Thunderday is a game that any action game enthusiast would enjoy.