Gloomhaven Attacks! is an attack modifier deck app for the Gloomhaven boardgame and its successors. Features include:

- Large cards
- Free no ads
- Use up to 10 decks at a time
- All decks maintain their states between uses
- Perks lists including cross-over perks lists for pre-Frosthaven characters in Frosthaven
- Supports custom cards and unofficial perks lists

This app uses creator assets made available by Cephalofair Games under creative commons license BY-NC-SA 4.0.