About Notebook Knockout, from BoardGameGeek:
In this Tabletop "Card Fighter" Battle Royale, players share deck of over 150 Action cards with nearly 60 unique effects which means the strategy shifts every reveal. Bluff, feint, save a powerful attack for next round, or use it now to try to knock out your rival. No two games play the same. Simple rules get new fighters swinging on turn one. Simultaneous reveals and hidden tactics give veterans real strategic depth. After each time a player is knocked out, an Arena card comes into play to spice things up adding 1 overarching rule that alters the battlefield.
After all card effects are resolved each turn, discard the Action cards that were played, take back your target card and get ready to lock in your next turn! The last players remaining with any health is crowned the Notebook Knockout Champion!