Best Moddable Games on Steam
Games designed to support user-made content, tweaks, maps, or systems.
Browse all Moddable →
1Left 4 Dead 2 - Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
Nov 16, 2009
In this game, you can…
- play as the infected in multiplayer, coordinating ambushes and hunting your friends as special monsters.
- have a giant brute show up mid-fight and start throwing cars at you in the middle of your escape route.
- run the same campaign twice and get different enemy spawns, item placement, lighting, and even weather, changing every fight and route.
- rip through a crowd with a chainsaw, then swap to a frying pan and keep clearing zombies up close.
- get grabbed by a long tongue and dragged around a corner while your team has to sprint after you.
- startle a crying witch, and she instantly mauls the nearest survivor.
- get vomited on, and it immediately calls a horde straight onto your whole team.
- race to fill a generator with gas cans while the other team tries to stop you, turning the match into a frantic objective sprint.
2Euro Truck Simulator 2 - Travel across Europe as king of the road, a trucker who delivers important cargo across impressive distances! With dozens of cities to explore, your endurance, skill and speed will all be pushed to their limits.
Oct 12, 2012
In this game, you can…
- practice alley-docking so much in-game that it carries over to real CDL-style trailer backing tests.
- join online convoys where a small bump can turn into a cross-country chase, or into a friendly honk-and-wave road trip with strangers.
- install major map mods and end up convoying through places like Iceland on custom roads with new physics and navigation.
- start with quick jobs, buy your first truck, take out loans, hire drivers, and grow into a multi-garage fleet that earns while you're out hauling.
- hammer down the highway with the speed limiter off, then sweat every speed camera and fine as you try to keep the delivery on time.
- reverse a full trailer into a tight loading bay and park it cleanly.
- cross a border and immediately deal with new road rules, new signage, and suddenly driving on the opposite side in the UK.
- haul everything from fuel and chemicals to oversized machinery and vehicles, then adjust how you drive to keep the cargo intact.
- tune in to live local radio stations as you drive and switch countries until the music and traffic rhythm sync up with the route.
3BeamNG.drive - A dynamic soft-body physics vehicle simulator capable of doing just about anything.
May 29, 2015
In this game, you can…
- change gravity settings and watch the same truck drive completely differently under moon or Jupiter gravity.
- join multiplayer races and chases, and keep driving even with half your truck bent under itself.
- wrap a car around itself by slamming it into a fence over and over.
- spawn traffic, rear-end someone, and get launched airborne for five seconds in the wreck.
- break your suspension cutting a rally corner, then limp the rest of the stage to the finish.
- build absurd custom vehicles, like a JATO rocket semi, then immediately stress-test them out in the world.
- take on deliveries, bus routes, police chases, and truck jobs where normal tasks turn dramatic because the physics won't fake it.
- hit traffic at highway speed, then crash into a jam in slow motion and watch the pileup deform in detail.
4The Elder Scrolls V: Skyrim Special Edition - Winner of more than 200 Game of the Year Awards, The Elder Scrolls V: Skyrim Special Edition brings the epic fantasy to life in stunning detail. The Special Edition includes the critically acclaimed game and add-ons with all-new features.
Oct 27, 2016
In this game, you can…
- turn into a werewolf or vampire lord, feed on enemies, blot out the sun, then summon a skeleton horse and a zombie dragon.
- join a crime syndicate, sell your soul to an evil god, kill the boss, then enlist in a hitman cult.
- join one side of a civil war, change your mind midstream, switch sides, and help wipe out your old allies.
- start on an execution block, then escape when a dragon attacks.
- marry someone, adopt kids, build a house, then head out to fight dragons again.
- go to a magic college, find a dangerous artifact, stop a power grab, and end up running the place.
- shout with dragon power to blast enemies apart and even ride dragons.
5The Elder Scrolls V: Skyrim - EPIC FANTASY REBORN The next chapter in the highly anticipated Elder Scrolls saga arrives from the makers of the 2006 and 2008 Games of the Year, Bethesda Game Studios. Skyrim reimagines and revolutionizes the open-world fantasy epic, bringing to life a complete virtual world open for you to explore any way you choose.
Nov 10, 2011
In this game, you can…
- start a full-town brawl by punching a chicken.
- enter a drinking contest, black out, wake up in a temple, track down a missing goat from a giant, and end up meeting a Daedric Prince for a reward staff.
- stand on a mountain, learn magical shouts, then spend dragon souls to unlock more words and yell enemies around as a core combat tool.
- pick a direction with almost no guidance and stumble into caves, dungeons, and random sights just by wandering.
- build your entire character around a once-per-day racial power, like berserker rage or rapid magicka regeneration.
- buy or build a house and turn it into an organized museum with weapon racks, sorted chests, and crafting supplies placed by each station.
- become a werewolf and ignore the main quest to live off the land, hunting deer and tearing through bandits.
- watch a dragon swoop down mid-conversation, grab a guard in its mouth, fling him into the air, and kill him instantly.
6People Playground - Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.
Jul 23, 2019
In this game, you can…
- tear maps open with explosives until wall panels fall away, revealing detailed pipes and wiring hidden behind the surface.
- strap rocket boosters to ragdolls, then escalate into spike-and-flamethrower traps and a machine that launches someone into space.
- swap a person's blood for other liquids, like acid or atomic-bomb ingredients, and watch their body chemically change and even glow green.
- kidnap three people, make them fight to the death, then set the last one free.
- wire generators, logic gates, and machines together into contraptions that mix electricity, fire, acid, bullets, syringes, and healing fields.
- spawn people with jetpacks and swords, then make them fight robots or other AI while you stage the whole arena.
- mess with the environment—temperature, rain, snow, lightning, ocean, lava, abyss—and use it to run controlled catastrophe experiments.
7Arma 3 - Experience true combat gameplay in a massive military sandbox. Deploy with a wide variety of single- and multiplayer content, a massive arsenal of modern weapons and vehicles, and limitless opportunities for content creation. Authentic, diverse, open - Arma 3 sends you to war.
Sep 12, 2013
In this game, you can…
- build custom wars and scenarios in an editor, from realistic ops to zombies, aliens, sci‑fi, and completely player-made terrains.
- lie motionless in a ghillie suit while an entire platoon patrols right past you.
- treat battlefield injuries mid-fight, from chest wounds to splints and stitches, while your squad keeps taking fire.
- spend 30 minutes watching patrol routes, sprint 200 meters into the open, plant charges on a comms tower, then escape before the patrol net closes.
- play missions where 7 people crawl for cover, patch each other up, and keep moving even after a sniper drops someone instantly.
8Cities: Skylines - Cities: Skylines is a modern take on the classic city simulation. The game introduces new game play elements to realize the thrill and hardships of creating and maintaining a real city whilst expanding on some well-established tropes of the city building experience.
Mar 10, 2015
In this game, you can…
- accidentally route sewage outflow into your own drinking-water pumps and watch the whole city get sick from polluted water.
- follow a single named citizen as they commute, work, shop, and chain a metro ride into a bus transfer.
- use mods to expand the playable map far beyond the base size and even fly a plane through your own city.
- lay roads from a lone highway connection and watch empty land turn into neighborhoods with homes, shops, and factories.
- rebuild highway exits and roundabouts until traffic patterns actually change and congestion drops dramatically across the city.
- draw and rename districts, then flip policies like free public transport or no high-rises to reshape how an area develops.
- build a dam that raises the river, then watch the new water level flood whatever neighborhoods you put too close.
- run buses, metros, trains, taxis, cargo ships, and airports, then tune routes so the entire transport network works together.
9Half-Life 2 - Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.
Nov 16, 2004
In this game, you can…
- use a gravity gun to turn junk into weapons, tools, and stepping stones mid-fight.
- launch a saw blade and slice an enemy clean in half.
- pick up a random can, throw it at a guard, and watch him chase you down.
- carry one specific object for ages because the world stays physically consistent.
- drive a buggy across huge stretches of coast and ruins while the same looming tower stays in sight.
- storm a fortified prison complex as a full-scale set-piece assault.
- walk into a chapter the game treats like horror, with zombies howling and shadows jumping rooftop to rooftop.
- solve small puzzles by moving real objects through water, fire, and weight, instead of hitting switches.
10Fallout: New Vegas - Welcome to Vegas. New Vegas. Enjoy your stay!
Oct 19, 2010
In this game, you can…
- walk into the Strip with high Luck, win so much at blackjack and slots that every casino bans you for draining them.
- kill major named characters and still finish the main story without the game walling you off from the ending.
- wake up after being shot in the head and immediately start hunting down the person who buried you and stole your delivery.
- pick a side in a town standoff, then have that decision follow you as the wronged faction starts treating you like an enemy.
- play factions against each other until some towns welcome you and others attack on sight based on what you've done for their rivals.
- stumble into an off-path vault, uncover its fake-sacrifice tradition, and learn the residents have been killing people for nothing.
- switch between slow-motion body-part targeting and real-time gunfights, then watch kills play out in cinematic slow motion.
- build a character who can do wildly different jobs, like a laser-weapons medic one run and an explosives-and-melee brute the next.
