ActionAdventure
Serious Sam: Siberian Mayhem
Give it 3 hours
Gets good by 3h almost every game dips in hours 2–3
Fully opens up by 4h rated like by long-time players
Reach the ending 56% of players who started
Started playing 89% of owners
Steam reviews 92% positive of 5,304
What the data shows
- In the first 2 hours 1 in 4 reviews are negative (24%); after 5h it's 1 in 20 (5%).
- Fully opens up by hour 4.
- 56% of players who start reach the ending.
- Most players drop off before “The Refinery” (Back on the Big Land): only 82% of starters get there.
- 89% of owners got the first achievement.
When it gets good
Share of positive reviews by how many hours the reviewer had played when writing the review.
before it gets good opening up fully opened up
Based on all 5,354 Steam reviews in every language. Median playtime in a sample of 296 reviews: 6h for positive, 4.2h for negative. Almost every game is rated lower in the first 2–3 hours: that window includes refunds and quick first impressions. What matters is how deep the dip is and how fast the game recovers.
Where players quit
Share of players who started the game and reached each story milestone. 100% is the most common achievement (88.8% of owners), so people who bought the game and never launched it don't count.
- Started playing 100%
- The Refinery Back on the Big Land Most players quit here 82% −18
- Black Gold No complaints. Only skills 81% −1
- The Processing In Mother Russia, you invade the aliens! 75% −6
- Heart of Russia Through the snow, flames, and alien bodies 66% −8
- The Last Train Departed Searched for the enemy, found new friends 61% −5
- Alpha and Omega Embrace the origins 58% −3
- The End From Russia with love 56% −1
story milestone ending biggest drop-off
Story milestones were labeled by AI from achievement names and descriptions; mistakes are possible.
All achievements (51)
story milestone ending side
- Dogs and Frogs No hope for a hopping mob 100%
- The Refinery Back on the Big Land 82%
- Black Gold No complaints. Only skills 81%
- Extremely Uncool Meet the naughty monster 76%
- The Processing In Mother Russia, you invade the aliens! 75%
- The Operator Try a new career 73%
- Eye for an Eye A tooth for a truth 70%
- Energize Anything for a reward 69%
- Heart of Russia Through the snow, flames, and alien bodies 66%
- All Ingenious is Simple The smartest man on Earth 66%
- The Last Train Departed Searched for the enemy, found new friends 61%
- Alpha and Omega Embrace the origins 58%
- Fight Fire with Fire Kill Draconian Burner with a Burner gun 57%
- The End From Russia with love 56%
- Death from Above Now it's your turn 54%
- Critical Temperature Kill 10 enemies with one Burner explosion 50%
- Everyone Is A Minesweeper ...at least once 48%
- Ok, And? Not the best way to keep warm 44%
- Back To The Future Rise and levitate 43%
- Hide and Seek Set your spirit free 42%
- The Dark Tower When passion overcomes the pain 41%
- Inborn Plumber When passion becomes profession 36%
- Traitor's Tale Find every General Brand audio log 34%
- Line up, please! Kill 5 enemies with one Crossbow shot 26%
- Sweet Kompot From granny, with love 23%
- All Ingenious is Hard You are here to shoot, right? 18%
- Sam The Explorer Find half of all the secrets 17%
- Part-Time Hero Get half of all achievements 14%
- More Complaints Find every Dmitry audio and text log 12%
- Oops, I dropped it Rid the monster of its misery 11%
- All Ingenious is Shot A solution to any problem 8.4%
- David and Goliath Defeat Sentry Tower with sole hoverboard firepower 8.2%
- Breaking News Find all of the print media notes 8.0%
- Serious Archaeologist Hey, this looks familiar! 7.4%
- Hole-in-One Stay here and kill them all... with a black hole 7.2%
- Iron Caput Don't ride the tank - become the tank 7.2%
- Serious Mayhem Complete Siberian Mayhem on Serious difficulty in Singleplayer 6.2%
- Aurora Borealis Get any medal on The Snowrider survival level 5.9%
- Look Ma, I'm a Lumberjack! Complete the mech sequence and kill all big enemies without shooting 5.6%
- No Stone Unturned Find all secrets 5.6%
- Hero-glyphic Get any medal on Horus Sanctuary survival level 5.5%
- Veni, Vidi, Vici Beat the final boss in Singleplayer on Serious difficulty without loading mid-battle savegames 5.3%
- Extreme Survivalist Get a gold medal on any survival level 4.7%
- Superior Species Get any medal on Kleer Fortress survival level 4.6%
- Feng Shui Fight Get any medal on Dragon Gates survival level 4.5%
- Welcome to the Jungle Get any medal on Monkey Canyon survival level 4.5%
- Old School Complete Siberian Mayhem without learning a single S.A.M skill in Singleplayer 4.5%
- Here Comes the Pain Get any medal on Castle of Pain survival level 4.3%
- Combustion Tamer Kill 30 enemies while riding one Draconian Burner 3.9%
- Massacre Party Complete Siberian Mayhem on Serious difficulty in Cooperative with enemy multiplier set to at least x2 3.5%
- Hero Unlock all Achievements. 2.7%
Steam page Updated: 2026-10-19.