The pitch for Linux gaming used to be “it mostly works if you’re patient.” That’s no longer the honest framing — thanks largely to Valve’s investment in Proton (driven by the Steam Deck), most single-player and many multiplayer games on Steam run at or near native performance. The remaining friction is specific and mostly predictable, not random.

Check ProtonDB before you buy, not after

ProtonDB aggregates real user reports per game, rated Platinum (runs perfectly out of the box) down to Borked (doesn’t run). This is the single most useful habit to build if you’re gaming on Linux — check the rating before purchasing, not after you’ve already bought something that turns out to need workarounds. Steam Deck verification badges (also visible directly in the Steam store) are a decent proxy for the same information, since Deck verification specifically tests Proton compatibility.

The actual failure mode: anti-cheat

The single biggest predictable category of “this won’t work” is kernel-level anti-cheat. Games using Easy Anti-Cheat or BattlEye can work under Proton — many publishers have explicitly enabled Linux support for their anti-cheat integration — but it’s opt-in per game, not automatic. A game using the same anti-cheat middleware as another game that works fine on Linux is not a guarantee; each publisher has to flip that switch. Check Are We Anti-Cheat Yet for current per-game status before assuming a competitive multiplayer title will work.

Setting it up: it’s simpler than it sounds

On Steam specifically, enabling Proton for all titles is one setting: Steam → Settings → Compatibility → “Enable Steam Play for all other titles,” then pick a Proton version (Proton Experimental is usually the right default unless a specific game has a known-good older version documented on ProtonDB). For games outside Steam entirely — Epic, GOG, standalone installers — Lutris and Heroic Games Launcher handle Proton/Wine integration for those storefronts specifically, with community-maintained install scripts for common problem games.

The tools worth knowing about

  • ProtonDB — compatibility ratings, described above
  • Lutris — a launcher that manages Wine/Proton prefixes for non-Steam games, with community install scripts that handle the fiddly per-game workarounds automatically
  • Heroic Games Launcher — the equivalent for Epic Games Store and GOG specifically, cleaner and more focused than Lutris if that’s all you need
  • MangoHud — an in-game performance overlay (FPS, frame time, temps) that works across Proton titles, useful for actually diagnosing whether a performance issue is Proton overhead or something else
  • GameMode — a Feral Interactive tool that requests performance-governor CPU behavior and other optimizations automatically while a game is running, then reverts after

What to expect realistically

Single-player games with no kernel-level anti-cheat: high confidence it’ll just work, usually within a few percent of native Windows performance. Competitive multiplayer titles: check Are We Anti-Cheat Yet first, every time, since this is the one category where “probably fine” isn’t good enough odds. Anything requiring specialized peripherals with Windows-only drivers (some racing wheels, some VR headsets) is the other predictable trouble spot — check for Linux-specific driver support before assuming Proton alone solves it.

Steam Deck’s existence has been the accelerant here — every game a big publisher wants Deck-verified now gets real Linux compatibility testing, which benefits desktop Linux gaming as a side effect. That trend is the actual reason this is worth taking seriously now, not a philosophical argument about open platforms.