Although Valve doesn't provide verification for game demos at this time, Isle of Reveries is being developed and tested with Steam Deck in mind, so the demo is fully compatible by default. No need to fiddle with Proton versions or gamepad configurations!
The Isle of Reveries Demo has received a couple of reviews from players that primarily played on Steam Deck:
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"I'm a big fan of both traditional 2-D top-down Zelda and the GBC pixel art aesthetic, so IoR is right up my street. Clearly a lot of love and attention has gone into crafting this demo. Looking forward to the full game." -- Steam reviewer
"i am a bird" -- Steam reviewer
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Isle of Reveries is a GameBoy Color-inspired action-adventure puzzle game where you make a pilgrimage across the desecrated Land in the Sky. Fight through eight mysterious dungeons, each with their own unique themes and puzzles, meeting charming anthropomorphic characters along the way.
Use your fairy companion’s magic to duplicate and spawn a variety of objects in the world, and discover how they interact with your robust set of items to solve head-scratching puzzles.
Features
A large world that doesn’t hold the player’s hand, filled with charming anthropomorphic characters.
Eight dungeons, each with their own distinct theme and key item.
Key items that are useful in both combat and puzzle solving, and remain so after completing the dungeons they’re found in.
Use the fairy companion to copy and spawn various objects found in the world, including puzzle blocks, torches, mushrooms, and more.
Dedicated jump button so that there’s always space to equip the most relevant items.
Take a break from the adventure and enjoy bug catching and fishing.
MINIMAL SETUP
OS: SteamOSMemory: 2 GB RAMStorage: 150 MB available space