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Wunder: The Double-Sided Deckbuilder Demo

About this game

A roguelike deckbuilder, about flipping coins to cross the Rivers of Hades.

Every "card" is a coin that can land heads or tails (usually), granting an afterlife... or a swift end in the dark waters.

Let's Play a Game of Wunder!

Inspired by Balatro & Slay the Spire, you collect coins and flip them in battles of chance against the Ferryman.

You play by drawing 7 coins from your deck, rearranging and then flipping them all at once. With strategic planning and more than a little luck, they can trigger & reflip each other; destroying the target score, if not... well, what goes up must come down.

Demo Features

This demo is a small slice of what Wunder has to offer, you'll get to;

  • Journey through all 5 Rivers of the Underworld, from Styx to Phlegethon. Every run is different with each river testing you in it's own way.

  • Build a strategy using a variety of unique Coins and Talismans. All the Coins are based on figures throughout Greek mythology, each with their own unique risk / reward mechanics that can synergise or disrupt each other.

  • Upgrade the heads, tails or both sides of each coin in order to create a balanced deck, or put everything on one coin and pray to the gods that it lands heads and breaks the game.

The full game will have lot more replayability with many difficulties, challenges & 3 different Endless modes. There will of course also be far more coins, talismans, upgrades, bosses, events, secrets and more!

Disclaimer

The demo is still a work in progress. I'm gonna be updating it frequently on the run up to Next Fest on Feb 23rd, and beyond that up to launch. I'll be sure to send out announcements when there are significant changes!

Wunder: The Double-Sided Deckbuilder Demo

Wunder is a game of chance about flipping coins. Build a deck of coins with their own risk & reward; upgrade each side to tilt the odds in your favour, bolster your strategy with strange talismans and defeat the Ferryman at his own game.

Developer

BumbleMumble

Publisher

bumbleborn

Release Date

16 February, 2026

Platforms