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Grumpy Jack

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About Grumpy Jack

Grumpy Jack is a top-down bullethell adventure set in a hand-drawn, Halloween-inspired world. You explore interconnected areas, dodge traps and solve puzzles while learning skills and uncovering a humorous story filled with bizarre characters and odd surprises.

Explore the world

The large world has Metroidvania-style progression, with strange creatures, forgotten corners and distinct areas. As you explore, you meet quirky characters and take on unusual tasks, including helping a skeleton with a strange request.

Fight and learn

You face bullethell action and can learn and master a wide variety of skills. Five difficulty modes range from relaxed to relentless. The game features hand-drawn 2D art and animation.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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