Just Volleyball Steam Deck: What We Know

Just volleyball is a Windows-only Steam game, so Steam Deck support depends on Proton, Valve's compatibility layer. As of November 2, 2026, there is no official Valve rating for the game. ProtonDB lists a provisional platinum tier, but that label comes from a single report and the site itself marks the confidence as inadequate. That is a hint, not a guarantee.

The compatibility picture

The hardware is not the concern. The Deck's APU is far above the game's minimum and recommended GPUs. A 500 MB game with simple geometry should run comfortably. The unknowns are Proton compatibility and input.

What "provisional platinum" means

ProtonDB tiers run from borked to platinum. Platinum means the game runs well after installing, without tweaks. Provisional means the tier is based on limited data and may change. A single report is enough to create a provisional entry, but it is not a community consensus.

The site's own confidence field says "inadequate," which is the correct reading. One person installing the game, launching it, and reporting a good result does not prove that every mode, every lobby, and every replay works. Treat platinum as "no known blocker," not as "verified."

The input problem

Just volleyball is designed around a mouse cursor. The cursor decides where every contact goes, and the difference between a good pass and a bad one is often a few pixels. The Steam Deck has two trackpads, a touchscreen, and a gyro, but none of them is a mouse.

Three ways to play on Deck:

1. Trackpad plus gyro. The right trackpad emulates the mouse; gyro fine-tunes the aim. This is the closest analogue, and it takes practice.
2. Docked with a mouse and keyboard. The Deck becomes a small PC. This is the most accurate option and the one to use if you care about online matches.
3. Controller-only. The demo had a controller path, according to Rock Paper Shotgun, but the store metadata does not list controller support. Do not assume it will work at launch.

If you plan to play competitively, dock the Deck. If you plan to play 1v1 or 2v2 casually, the trackpad is workable after an adjustment period.

Performance expectations

The game's requirements are so low that the Deck should hit its 60 Hz screen without much trouble. The variables are Proton overhead and the game's renderer. OpenGL titles can run well through Proton, but they can also hit driver-specific bugs that a Windows machine never sees.

A reasonable expectation:

• 720p handheld: smooth, with the default settings.
• 800p handheld: likely smooth; the Deck's native resolution is not demanding for this game.
• Docked 1080p: likely smooth, but test before a tournament.
• Battery: a lightweight game should give a good runtime, but the screen and Wi-Fi are the real draw.

Do not expect official performance numbers before launch. The developer has not published Deck benchmarks, and the ProtonDB sample is too small.

What to test on day one

If you buy the game for Deck, run this checklist before you commit to a control scheme:

• Launch the game in handheld mode and confirm it reaches the menu.
• Start a bot match and check the frame rate.
• Try the right trackpad as a mouse. Adjust the sensitivity.
• Try gyro aiming. If it feels worse, turn it off.
• Join an online lobby and check the ping.
• Try a split-screen or local match if you plan to dock.

If the game does not launch, try a different Proton version in the Deck's compatibility settings. ProtonDB comments usually name the version that works; check the page again after launch, when more reports arrive.

Docked vs handheld

Docked is the better experience for this game. A mouse and keyboard solve the input problem, and a monitor solves the cursor visibility problem. Handheld is for practice, 1v1, and casual matches.

The dock also gives you Ethernet, which matters more than the GPU for online play. A wired Deck with a mouse is a credible budget setup. A handheld Deck on Wi-Fi is a compromise.

Should you buy the game for Deck?

If the Deck is your only PC, yes, with the input caveat. The game is cheap, small, and undemanding. If you own a gaming PC, play there and use the Deck as a secondary device. If you are buying a Deck specifically for this game, wait for post-launch reports; the provisional rating is not enough to justify the purchase on its own.

The system requirements page confirms how far below the Deck's hardware the game sits. The controls guide explains why the cursor matters so much, which is the real reason to dock the Deck.

FAQ

Is just volleyball Steam Deck verified?

No. Valve has not rated it. ProtonDB has a provisional platinum entry based on one report.

Will it run on Steam Deck?

Probably, through Proton. The hardware is well above the requirements; the unknowns are Proton compatibility and input.

Can I use a controller on Steam Deck?

The store does not list controller support. The Deck's trackpad can emulate a mouse, and a docked mouse and keyboard is the safer option.

Is it playable handheld?

Yes for casual modes, with practice. Competitive play benefits from a docked mouse and keyboard.

Further reading

• Steam Deck

Official source: ProtonDB for the compatibility report and just volleyball on Steam for platform and input metadata.