Strategy
Grey Goo
Give it 10 hours
Gets good by 10h then rated almost like by veterans
Fully opens up by 20h rated like by long-time players
Reach the ending 22% of players who started
Started playing 45% of owners
Steam reviews 68% positive of 4,343
What the data shows
- In the first 2 hours 1 in 2 reviews are negative (60%); after 20h it's 1 in 6 (15%).
- Fully opens up by hour 20.
- The opening is criticised more than in 89% of games we track.
- 22% of players who start reach the ending.
- Most players drop off before “No More Running” (Complete the Beta campaign on any difficulty): only 63% of starters get there.
- Only 45% of owners have even the first achievement — the rest barely played.
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 4,355 Steam reviews in every language. Median playtime in a sample of 295 reviews: 18.6h for positive, 6.4h 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 (45% of owners), so people who bought the game and never launched it don't count.
- Started playing 100%
- No More Running Complete the Beta campaign on any difficulty Most players quit here 63% −37
- Point of First Contact Complete the Human campaign on any difficulty 44% −19
- Call for Help Complete the Goo campaign on any difficulty 23% −21
- End of the Beginning Complete all missions of the campaign on any difficulty 22%
story milestone ending biggest drop-off
Story milestones were labeled by AI from achievement names and descriptions; mistakes are possible.
All achievements (35)
story milestone ending side
- Start of Something Epic Build an Epic unit 100%
- No More Running Complete the Beta campaign on any difficulty 63%
- Practice Makes Perfect Win a skirmish match against an AI 44%
- Point of First Contact Complete the Human campaign on any difficulty 44%
- Self Sacrifice Feed a Mother Goo to a Proto-Purger (in any aspect of the game) 42%
- Epic Escalation Build the Epic unit for each faction 36%
- Call for Help Complete the Goo campaign on any difficulty 23%
- End of the Beginning Complete all missions of the campaign on any difficulty 22%
- Maxed Out! During a multiplayer match, build the maximum possible number of units 14%
- Civil Servant Complete the Mago's Pass mission without losing a single civilian 11%
- Even Ground Win a one-on-one multiplayer match 10%
- Weapon of Mass Destruction Win a skirmish or multiplayer match in Total Annihilation mode 8.2%
- Hat Trick Win a skirmish match against the AI with each of the factions 8.0%
- Evolutionary Pinnacle Win all missions and complete all bonus objectives in the Goo campaign on any difficulty 7.1%
- Macro Master As Human or Beta, complete a multiplayer or skirmish match without ever hitting the resource cap 7.1%
- Game Ender Win a multiplayer match after destroying an enemy Epic unit 7.1%
- Back from the Dead Rebuild your HQ (in any aspect of the game) 6.7%
- Barca's Finest Win all missions and complete all bonus objectives in the Beta campaign on any difficulty 5.1%
- Tag Team Win a 2v2 multiplayer match 4.7%
- Galactic Explorer Win all missions and complete all bonus objectives in the Human campaign on any difficulty 4.2%
- Glutton for Punishment Win a skirmsh match against 3 AI opponents on hard difficulty 3.3%
- Uncompromised Conquest Win all missions and complete all bonus objectives in the campaign on any difficulty 2.4%
- GG Complete all missions of the campaign on Hard difficulty 2.4%
- Kickin' It Old School Win a LAN match (against an actual person or persons) 2.2%
- Epic Loss Destroy each faction's Epic unit during a multiplayer or skirmish match 2.0%
- Completionist Win all missions and complete all bonus objectives in the campaign on hard difficulty 1.6%
- One Player to Rule Them All Win a four player free-for-all match 1.6%
- Ain't Nobody Got Time for That Have at least 20 units mounted on wall pillars at the same time during a single ranked multiplayer match 1.1%
- Fort Awesome Have at least 3 of every Sentinel type in your base at once during a single ranked multiplayer match 1.1%
- Master of Teleportation Use the Teleporter structure at least 3 times and teleport at least 5 structures during a single ranked multiplayer match 1.1%
- Seasoned Engineer Heal 1000 or more damage using the Repair Pad structure during a single ranked multiplayer match 1.1%
- Sharing is Caring Destroy 5 Extractors or Mother Goos with a Mother Goo in a single ranked multiplayer match 1.1%
- Full Time Job Win 100 multiplayer matches of any size or mode 1.1%
- I Could Do This All Day Win 100 skirmish matches 1.1%
- World War G Consume 100 enemy units or structures with formless Goo in a ranked multiplayer match 1.1%
Steam page Updated: 2026-10-19.