I've just had a browse through my Steam library:
Elite: Dangerous: 418 hours, since July 2019, still going strong
Aporia: Beyond The Valley | 9 hours | probably over 50% complete | game breaking bug |
Bastion | 2 hours | only playable with a controller | |
The Beginners Guide | 113 minutes | complete | recommended |
Binary Domain | a few hours | a few hours | hit a skill spike, good game |
Bioshock Remastered | 22 hours | completed | |
Bioshock 2 Remastered | 84 minutes | | game breaking bug |
Broken Age | 16 hours | complete | recommended |
Cities Skylines | 19 hours | | a bit meh |
Condemned Criminal Origins | 54 minutes | | a bit meh |
Creeper World 3 | 31 hours | all but final mission | skill spike |
Crossing Souls | 3 hours | | |
Crystal City | 3 hours | 50% achievements | |
The Descendant | 4 hours | | must get around to finishing it at some point |
Dreamfall Chapters | 34 hours | | must get around to finishing it at some point |
Dujanah | about an hour | kickstarter backer | not really my thing |
Skyrim | 254 hours | not finished | got bored |
Fallout 2 | 6 hours | | |
Fallout 3 | completed | | |
Fallout 4 | 274 hours | not completed but several runs | |
Fallout: New Vegas | 80 hours | completed more than once | |
Gone Home | 5 hours | completed | recommended |
Gorogoa | 8 hours | completed | recommended |
Half-Life 2 | 11 hours | hit an annoyingly intricate puzzle | |
House Flipper | 26 hours | completed | |
A House of Many Doors | 76 minutes | Kickstarter backer | not really my thing |
Kerbal Space Program | 90 minutes | | |
Lifeless Planet | 17 hours | completed | recommended |
Mass Effect 1 | 13 hours | | |
Mount & Blade Warband | 7 hours | | |
Planet Coaster | 10 hours | | |
Portal | 7 hours | | |
Return of the Obra Dinn | 3 hours | | |
Rise of the Tomb Raider | 18 hours | | |
Rome: Total War | 24 hours | | |
Rumu | 3 hours | completed | recommended |
Scavenger SV-4 | 3 hours | | |
Civilization V | 14 hours | | |
Space Engineers | 4 hours | | |
The Stanley Parable | a few hours | | |
Stellaris | 145 hours | | |
Submerged | 8 hours | completed | recommended |
The Swapper | 85 minutes | | hit a skill spike |
Tacoma | 4 hours | completed | recommended |
The Talos Principle | 10 hours | | |
Total War: Attila | 11 hours | | |
Transistor | 9 hours | | |
Undertale | 2 hours | | |
What Remains of Edith Finch | 3 hours? (seems low) | completed | |
Xenonauts | 39 hours | Kickstarter backer | |
Elite: Dangerous: 418 hours, since July 2019, still going strong