Portal 2 vs Half-Life 2 (and episodes) vs Portal

 vs Counter-Strike: Global Offensive vs Limbo vs Team Fortress 2 vs Terraria vs Machinarium vs Left 4 Dead 2 vs World of Goo vs Kerbal Space Program vs Metro: Last Light vs Borderlands 2 vs Euro Truck Simulator 2 vs FTL: Faster Than Light vs 0 A.D. vs Minecraft vs Factorio vs Civilization V vs Papers, Please vs Battle for Wesnoth vs Amnesia: The Dark Descent vs FlightGear vs Starbound vs Super TuxKart vs The Talos Principle vs Trine 2 vs Dota 2 vs FEZ vs Bastion vs Cities: Skylines vs OpenTTD vs The Binding of Isaac: Rebirth vs Transistor vs Prison Architect vs ET: Legacy (Wolfenstein: Enemy Territory) vs Rogue Legacy vs BattleBlock Theater vs Metro 2033 Redux vs Dwarf Fortress vs Wasteland 2 vs Hollow Knight vs Shadowrun Returns vs DOOM vs Rocket League vs Broken Age vs Crusader Kings II  vs OneShot vs Crawl [Early Access] vs Tropico 5 vs Hyper Light Drifter vs Pillars of Eternity vs Cave Story+ vs Monaco: What's Yours Is Mine vs Garry’s Mod vs Risk of Rain vs Serious Sam 3: BFE vs Mindustry vs Distance vs Eufloria vs Life is Strange vs Braid vs Europa Universalis IV vs Openspades vs Minetest vs Dying Light vs The Elder Scrolls V: Skyrim vs Sid Meier's Civilization VI vs Oxygen Not Included vs Undertale vs XCOM: Enemy Unknown vs Night in the Woods vs Grim Fandango Remastered vs NetHack vs Dungeons of Dredmor vs War for the Overworld vs Icewind Dale: Enhanced Edition vs Awesomenauts vs Natural Selection 2 vs SuperTux vs SuperTuxKart vs Middle-earth: Shadow of Mordor vs 7 Days to Die vs Cities in Motion 2 vs Dust: An Elysian Tail vs Enter the Gungeon vs The Dark Mod vs Kentucky Route Zero vs Baba Is You vs Borderlands: The Pre-Sequel vs American Truck Simulator vs Legend of Grimrock vs Planetary Annihilation vs Meltdown vs Heroes of Newerth vs Celeste vs ARK: Survival Evolved vs The Journey Down vs War Thunder vs Baldur's Gate: Enhanced Edition vs Total War: Warhammer 2 vs Waking Mars vs X3: Terran Conflict vs Dustforce vs STAR WARS - Knights of the Old Republic II vs Rust vs Warsow vs Stunt Rally vs Tropico 6 vs SimCity vs Ziggurat vs Rochard vs Verdun vs Sid Meier's Civilization: Beyond Earth vs Oil Rush vs Doom Eternal vs Out There: Ω Edition vs J.U.L.I.A.: Among the Stars vs Titanion vs The Mean Greens - Plastic Warfare vs rRootage vs Torus-Trooper vs Darwinia vs minit vs Mark of the Old Ones vs Aragami vs Deltarune Chapter 1 vs The Last Federation vs Amnesia: A Machine for Pigs vs Shank (1 & 2) vs Patient Care Medical vs Sleep is Death vs Aquaria vs The Detail vs War in a Box: Paper Tanks vs Star Ruler 2 (early access) vs Metro: Last Light Redux vs Verdun vs ArcMaze