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Best Moddable Games

Top 50 of 395 qualifying games — tagged Moddable (community voting), 1,000+ reviews · ranked by Wilson lower bound on Steam review score · review data as of 2026-08-06.

1 People Playground (2019) Sandbox · Gore · Physics · $9.99 98.5%316,165 reviews 2 RimWorld (2018) Colony Sim · Base-Building · Survival · $34.99 97.9%244,121 reviews 3 A Hat in Time (2017) Cute · 3D Platformer · Collectathon · $29.99 97.8%53,347 reviews 4 Mount & Blade: Warband (2010) Medieval · RPG · Open World · $19.99 97.7%171,767 reviews 5 Trombone Champ (2022) Rhythm · Comedy · Funny · $14.99 97.9%11,141 reviews 6 STAR WARS Empire at War - Gold Pack (2010) Strategy · RTS · Space · $19.99 97.7%42,947 reviews 7 Half-Life 2 (2004) FPS · Action · Sci-fi · $9.99 97.6%277,331 reviews 8 Fractal Block World (2021) Exploration · Open World · FPS · $6.99 98.3%1,527 reviews 9 Left 4 Dead 2 (2009) Zombies · Co-op · FPS · $9.99 97.5%1,050,931 reviews 10 Factorio (2020) Automation · Base-Building · Resource Management · $35.00 97.5%232,859 reviews 11 Euro Truck Simulator 2 (2012) Driving · Transportation · Simulation · $19.99 97.4%935,003 reviews 12 BeamNG.drive (2015) Simulation · Driving · Physics · $24.99 97.3%411,200 reviews 13 Keep Talking and Nobody Explodes (2015) Co-op · Local Multiplayer · Puzzle · $14.99 97.3%17,053 reviews 14 POSTAL 2 (2012) Violent · Dark Humor · Open World · $9.99 97.0%136,491 reviews 15 American Truck Simulator (2016) Automobile Sim · Driving · Open World · $19.99 96.9%194,637 reviews 16 Garry's Mod (2006) Sandbox · Moddable · Multiplayer · $9.99 96.9%1,255,810 reviews 17 IRMÃO Grande & Brasileiro 2 (2021) Simulation · Casual · Party Game · $19.99 97.7%1,485 reviews 18 Hot Dogs, Horseshoes & Hand Grenades (2016) Sandbox · VR · Physics · $19.99 97.0%23,808 reviews 19 Ravenfield (2017) FPS · War · Singleplayer · $17.99 96.7%79,735 reviews 20 Fireworks Mania - An Explosive Simulator (2020) Sandbox · Multiplayer · Singleplayer · $14.99 96.9%7,884 reviews 21 Don't Starve (2013) Survival · Open World Survival Craft · Crafting · $9.99 96.6%113,277 reviews 22 Spaceflight Simulator (2022) Sandbox · Space Sim · Space · $9.89 96.8%9,598 reviews 23 Supreme Commander: Forged Alliance (2011) Strategy · RTS · Sci-fi · $12.99 96.7%14,302 reviews 24 DOOM + DOOM II (2007) FPS · Classic · 1990's · $9.99 96.6%28,715 reviews 25 Half-Life (1998) FPS · Classic · 1990's · $9.99 96.5%163,229 reviews 26 Blade and Sorcery (2024) VR · Swordplay · Moddable · $29.99 96.5%61,907 reviews 27 Left 4 Dead (2008) Zombies · Co-op · Multiplayer · $9.99 96.4%67,754 reviews 28 Quake (2007) FPS · Classic · Action · $9.99 96.5%15,667 reviews 29 No Time (2019) Time Travel · Time Manipulation · Sandbox · $12.99 97.0%2,184 reviews 30 Incredibox (2021) Casual · Rhythm · 2D · $4.99 96.7%5,880 reviews 31 Counter-Strike: Source (2004) Shooter · FPS · Action · $9.99 96.3%192,678 reviews 32 Slice & Dice (2024) Turn-Based Strategy · Rogue-like · Dungeon Crawler · $8.99 96.9%2,549 reviews 33 Unreal Tournament: Game of the Year Edition (2008) Classic · FPS · Action · Free 96.7%4,452 reviews 34 STAR WARS Battlefront (Classic, 2004) (2019) Action · Multiplayer · Classic · $9.99 96.5%4,684 reviews 35 Fallout: New Vegas (2010) Open World · RPG · Post-apocalyptic · $9.99 96.0%260,119 reviews 36 Rusted Warfare - RTS (2017) RTS · Strategy · Base-Building · $4.99 96.4%7,465 reviews 37 Unreal Tournament 2004: Editor's Choice Edition (2008) FPS · Arena Shooter · Action · Free 96.4%4,225 reviews 38 Tabletop Simulator (2015) Tabletop · Board Game · Simulation · $19.99 95.9%73,980 reviews 39 Rivals of Aether (2017) Fighting · 2D Fighter · Multiplayer · $29.99 95.9%37,989 reviews 40 Door Kickers 2: Task Force North (2025) Tactical · Top-Down · Real-Time with Pause · $24.99 96.1%13,465 reviews 41 Civilization IV: Beyond the Sword (2007) Strategy · Turn-Based Strategy · 4X · $5.99 96.2%5,044 reviews 42 STAR WARS Jedi Knight - Jedi Academy (2009) Action · Sci-fi · Third Person · $9.99 96.0%13,801 reviews 43 shapez (2020) Automation · Base-Building · Resource Management · $9.99 95.9%15,744 reviews 44 Half-Life 2: Episode One (2006) FPS · Action · Sci-fi · $19.99 95.8%31,358 reviews 45 Divinity: Original Sin 2 - Definitive Edition (2017) Tactical RPG · RPG · Turn-Based Strategy · $44.99 95.7%204,833 reviews 46 Sid Meier's Civilization V (2010) Turn-Based Strategy · Strategy · Turn-Based · $7.49 95.6%210,371 reviews 47 Car Mechanic Simulator 2021 (2021) Simulation · Automobile Sim · Realistic · $24.99 95.7%38,043 reviews 48 Kerbal Space Program (2015) Space · Simulation · Sandbox · $9.99 95.6%145,341 reviews 49 S.T.A.L.K.E.R.: Call of Pripyat (2010) Atmospheric · Open World · Post-apocalyptic · $19.99 95.7%31,386 reviews 50 Total War: MEDIEVAL II – Definitive Edition (2006) Strategy · Medieval · Historical · $24.99 95.7%36,213 reviews