I really enjoyed Dave the Diver on my deck, I'm only 9h in but didn't play for a while due to lack of time.

Another one that isn't really my thing but uses practically no battery is Minecraft through PrismLauncher (I don't like playing Minecraft on controller).

And some other games from my library that play nicely on deck, some might take a little bit more power:

• Celeste
• Geometry Dash (especially with the new platformer levels)
• Hue (might be a bit boring, I got it for free)
• Pole (might be a bit frustrating, I got it for free)
• Rayman Legends (there's a certain patch to make it run without uplay)
• Stardew Valley
• Turnip Boy Commits Tax Evasion
• Turnip Boy Robs a Bank
• Undertale

I've been going hard on Balatro lately. Fun rogue-lite deck-builder.

Hotline Miami is a good one. Not super demanding and great for short play sessions

I'm old, so I like playing nostalgic NES era games. Super Mario, Double Dragon, Final Fantasy 1, Tetris classic, etc.

Darkest Dungeon is probably top of my games not already mentioned, Slay the Spire is definitely up there too!

I haven't actually benchmarked this, but I believe Dead Cells is pretty battery life friendly.

Hollow Knight lasts a good amount of time on airplane mode (no online connection is needed)

Openttd and openrc2 I can get 20 hours easy

I'm currently traveling and really enjoying Against the Storm on the deck. Its easy to pop in for twenty minutes or just sink a couple hours into it. Runs super smooth on the deck.

It's technically "unsupported" for steam deck for some reason but one of my absolute favorites.

Heat Signature

It's a top down shooter roguelike with tight controls and and tons of replayability and it's extremely battery friendly, i remember being trapped in the woods for a few days and I was able to get 8 or so hours of play from that game

you can easily get 8 hours emulating ps2 games at 4w tdp and 1080p resolution, been playing persona 3 fes mostly because of that. I've also been able to push 4 hours emulating the switch version persona 5 royal at 7w tdp and 900mhz

though I'm not sure what extended travel means, I "only" travel 3 hours to class over one day

What are your favourite games? What genres do you like? It would be difficult to recommend without knowing your preferences.

@Telorand I play Stardew Valley for days without charging, so I guess it could definitely last you an entire trip.

Why aren't you taking the train? Depending where you live, they might have power sockets in there (trains here usually have)

Slay the spire and FTL are my two go-to travel games. They don't use much battery and give hours of entertainment

Dwarf Fortress, Skyrim, Valheim

Outrun 2006 Coast 2 Coast, you'll need to use wine/proton tricks to get the water rendering correctly or Ys games before 8.

In a weird way it is the really really fast paced games I like the most when on the go.

If I play 5 mins of Voidigo, DIG or Enter The Gungeon, I can potentially experience a lotttt of gameplay .

Playing Xonotic against bots is a blast, Xonotic probably uses less battery than any other 3D game in existence lol. Similarly 5 mins of Xonotic is a LONG time.

Motor Town is a great driving game to play while traveling, so is Snowrunners.

• Backpack battles
• Noita
• Broforce
• Baba is you
• Shattered pixel dungeon
• Caves of Qud
• Barony (maybe)
• Snake farm
• Snood

Traveling right now and I am playing Dead Cells. It's gentle on the battery and I am fairly new to the game so lots to explore.