Difficult · Moddable games to play together

30 Difficult · Moddable games your group can play together online, including JOY OF PROGRAMMING - Software Engineering Simulator, Barotrauma, and Outward Definitive Edition.

All games: 24

JOY OF PROGRAMMING - Software Engineering Simulator

Use real Python code to automate machines, robots, drones and more: Program self-driving vehicles; crack passwords; apply machine learning; automate logistics; use image processing to guide missiles. Gain real coding skills and solve exciting bite-sized programming challenges.

76% positive of 385 reviewsPlaying now: 6$17.99

Barotrauma

Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!

94% positive of 62,517 reviewsPlaying now: 4,887$17.49

Outward Definitive Edition

No remarkable journey is achieved without great effort. In Outward, the cold of the night or an infected wound can be as dangerous as a predator lurking in the dark. Explore the vast world of Aurai solo or in Co-op. The Definitive Edition features both DLCs and quality of life improvements.

71% positive of 24,903 reviewsPlaying now: 957$39.99

DDNet

Want to play the hardest cooperative 2D platformer ever? Want to finish no map ever? Want to be in pain for hours and cry, getting nothing in return? Come play DDNet with a large community of other sufferers!

86% positive of 47,184 reviewsPlaying now: 696Free

MX Bikes

MX Bikes is a realistic motocross simulator, based on a scratch built physics engine that accurately simulates motorcycle dynamics and setup options.

93% positive of 36,311 reviewsPlaying now: 3,238$34.99

Assetto Corsa Competizione

Assetto Corsa Competizione, the official GT World Challenge videogame. Thanks to the extraordinary quality of simulation, you will experience the atmosphere of the GT3 championship. Compete against official drivers, teams, cars and official circuits reproduced to the highest quality ever seen.

92% positive of 34,414 reviewsPlaying now: 1,391$39.99

Beat Saber

Slash the beats, get moving, and experience the world's most popular VR rhythm game!* Duck, dodge, and flow through 300+ handcrafted songs from artists like Coldplay, Imagine Dragons, and Metallica. Play solo, compete online, or pass the headset at your next party. Jump in with 60+ songs included!

95% positive of 69,883 reviewsPlaying now: 625$19.99

Synth Riders

Let the music move you as you catch notes, ride the rails, and dodge obstacles in a unique combination of freestyle dancing and fitness workout! Play on PC VR and Steam Frame.

91% positive of 1,349 reviewsPlaying now: 10$24.99

S.W.I.N.E. HD Remaster

S.W.I.N.E. HD Remaster is the new edition of the challenging classic strategy game S.W.I.N.E! The filthiest of all wars between the Rabbit and the Pig armies is a sophisticated real-time strategy with completely revised textures, detailed unit models, a 16:9 adapted interface.

92% positive of 1,024 reviewsPlaying now: 12$9.99

Mashinky

Mashinky is a transport strategy game about trains. The goal is to create your own transport empire on a procedurally generated map. It’s a unique blend of realistic graphics combined with an isometric construction mode and board game-like rules.

82% positive of 2,467 reviewsPlaying now: 35$24.99

Overgrowth

Feel like the star of a martial arts film in Overgrowth, as you jump, kick, throw, and slash your way to victory. Free the rabbits from their evil overlords in the main story, then play through the prequel story, and finally, try out nine years of mods developed by the community, or create your own!

84% positive of 6,317 reviewsPlaying now: 26$19.99

Keep Talking and Nobody Explodes

Find yourself trapped alone in a room with a ticking time bomb. Your friends have the manual to defuse it, but they can't see the bomb, so you're going to have to talk it out – fast!

96% positive of 14,387 reviewsPlaying now: 186$14.99

Simutrans

Simutrans is a freeware and open-source transportation simulator. Your goal is to establish a successful transport company. Transport passengers, mail and goods by rail, road, ship, and even air. Interconnect districts, cities, public buildings, industries and tourist attractions.

74% positive of 687 reviewsPlaying now: 35Free

Audiosurf 2

Ride your music in more ways than ever before. Audiosurf 2 is the music game for your entire music collection. Hundreds of mods/skins on Workshop. Free demo available.

82% positive of 5,369 reviewsPlaying now: 14$14.99

Toribash

Toribash is an innovative free-to-play online turn-based fighting game where you’re able to design your own moves. Complete control over character's body, hundreds of game mods and bloody mess with full body dismemberment - you've never been able to annihilate your enemies like that before!

88% positive of 16,851 reviewsPlaying now: 69Free

Original War: Shared-Control RTS Battles With Friends

Join an online or LAN team match in Original War, where named specialists, base building, and map-specific rules turn a retro RTS into a hands-on group effort.

94% positive of 1,820 reviewsPlaying now: 44$9.99

Dominions 4: Thrones of Ascension

You are a God! You are master and ruler of a loyal nation. You have unimaginable powers at your disposal. You have claimed this world as yours. But there are others who stand in your way. You must defeat and destroy these pretenders. Only then can you ascend to godhood and become the new Pantokrator.

88% positive of 1,125 reviewsPlaying now: 5$34.99

Cortex Command

Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!

82% positive of 2,002 reviewsPlaying now: 2$19.99

Arma 2: Operation Arrowhead

Three years after the conflict in Chernarus, portrayed in the original Arma 2, a new flashpoint explodes in the Green Sea Region. Coalition forces led by the US Army are deployed to Takistan to quickly restore peace and prevent further civilian casualties.

92% positive of 16,204 reviewsPlaying now: 191$19.99

DOOM + DOOM II

Developed by id Software, and originally released in 1993 and 1994, the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product.

95% positive of 25,692 reviewsPlaying now: 316$9.99

Quake III Arena

The greatest warriors of all time and space have been summoned to battle for the amusement of an ancient alien race. Wield a variety of guns and power-ups as you fight for glory against ruthless combatants in this fast-paced single-player and multiplayer FPS.

95% positive of 3,483 reviewsPlaying now: 44$14.99

Half-Life

Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

96% positive of 118,309 reviewsPlaying now: 1,191$9.99

Descenders

Descenders is extreme downhill freeriding for the modern era, with procedurally generated worlds, and where mistakes have real consequences. Will you lead your team to glory and become the next legendary Descender?

95% positive of 20,169 reviewsPlaying now: 0$24.99