Valve’s new Steam Machine verification system is silent on these Steam Deck-busters
Summary
Valve's Steam Machine verification ratings reveal data gaps for games that the Steam Deck can't handle but that still run on SteamOS. The article notes that Deck-verified titles are likely to be Steam Machine verified, while games already flagged as not working on SteamOS won't run on the Steam Machine. A partial list shows SteamOS-compatible games with 'Unknown' Steam Machine status, underscoring Valve's ongoing testing and the need for clearer guidance for buyers.