The game is based on simulating the melee combat of one protagonist against many enemies in close quarters common in action films, using turn-based combat with playing cards representing various moves the player can make.

The player's character has a number of action points on each turn to make various moves, which are set by the cards that they have available in their current hand, after drawing up to a fixed number at the start of the turn.

Card actions include many attacks that include options to reposition the player-character or move an enemy, movements options, or defensive stances to block or counterattack to opponent attacks.

[5] While planned originally for a 2020 release into early access, it was pushed back into 2021 but a free Prologue demo, allowing players to run through to the first boss character, was released in December 2020.

[9] Reception of the game in its early access state has been favorable, comparing the resulting gameplay to the James Bond, Bourne and John Wick films done by way of Slay the Spire.