Single-player games like Onslaught
Below are 8 single-player Steam games similar to Onslaught, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Onslaught page.
Ranked picks
- 1
GUN™
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action with Onslaught.
When life robs Colton White of all that matters, the only thing left he can trust is his GUN. From award-winning developer, Neversoft, and accomplished screenwriter, Randall Jahnson (The Mask of Zorro, The Doors), GUN follows Colton on his quest for discovery as he seeks to exact vengeful justice on those who have wronged him.
- 2
Sniper Elite 5
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action and Adventure with Onslaught.
The award-winning series returns as Karl Fairburne fights to uncover Project Kraken in 1944 France. The genre-defining authentic sniping, with enhanced kill cam, has never looked or felt better as you fight across immersive maps to stop the Nazi war machine in its tracks.
- 3
Grand Theft Auto III
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action and Adventure with Onslaught.
Welcome to Liberty City. Where it all began. With stellar voice acting, a darkly comic storyline, a stunning soundtrack and revolutionary open-world gameplay, Grand Theft Auto III is the game that defined the open world genre for a generation.
- 4
HITMAN World of Assassination
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action and Adventure with Onslaught.
Enter the world of the ultimate assassin. HITMAN World of Assassination delivers the definitive stealth action experience, putting you in the shoes of Agent 47, a master assassin. Explore immersive locations, uncover hidden secrets, and eliminate targets with complete freedom of approach.
- 5
Mafia
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action and Adventure with Onslaught.
It’s 1930. After an inadvertent brush with the mafia, cabdriver Tommy Angelo is reluctantly thrust into the world of organized crime. Initially, he is uneasy about falling in with the Salieri family, but soon the rewards become too big to ignore.
- 6
Gears 5
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action and Adventure with Onslaught.
From one of gaming’s most acclaimed sagas, Gears is bigger than ever. With all-out war descending, Kait Diaz breaks away to uncover her connection to the enemy and discovers the true danger to Sera – herself.
- 7
Max Payne 3
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action with Onslaught.
No longer a New York City cop, Max Payne moves to São Paulo to protect a wealthy family in an effort to finally escape his troubled past. This complete edition of Max Payne 3 includes the complete original game and all previously released downloadable content.
- 8
Oddworld: Stranger's Wrath HD
Single-player alternative to Onslaught — playable solo, no multiplayer required. Shares Action and Adventure with Onslaught.
You're the Stranger, a mysterious bounty hunter on a mission to bag the ultimate prize. And you need that money like no one else because there is something very wrong with your health and the only way to fix it is a very costly operation.