Simulate
Vanilla physics with the keys the client pressed: friction, gravity, collisions, water, elytra and knockback.
The anticheat that knows vanilla physics
Every player tick is simulated on your server and checked against what the client sent. Configure all checks and review every flag from one dashboard.
Survival SMPonline · pro
Preview with example dataPlayers online
57
Violations, 24 h
61
Punishments, 24 h
3
Snowy per tick
0.9 ms
Players and violations
last 24 h · hourly
Recent violations
| Notch_Alt | Speed (A) | 98% |
| xKiller09 | Reach (A) | 96% |
| xKiller09 | KillAura (B) | 91% |
| builder_jo | Scaffold (B) | 74% |
- per player tick, measured with 100 players
- ≈12 µs
- checks across movement, combat, world and packets
- 67
- legit bot sessions flagged in our load tests
- 0 / 370
- offline grace with a signed license lease
- 72 h
Cheats change packets. They can't change physics.
Compare
The simulated position must match the client's. Anything beyond a small, bounded tolerance goes to one check.
Act on evidence
Expected versus observed, with confidence. Punishments need several confident flags, never one odd moment.
Movement prediction
From walking to elytra flight in vanilla's order. Ghost blocks and pending knockback are tried, not ignored.
Lag compensated combat
Reach and hitbox against the positions the attacker could see, rebuilt from transaction acknowledgements.
Evidence for every flag
Measurements and a replay of the last 20 ticks, so staff can see why a player was flagged.
Configure from the browser
Every check, threshold and punishment rule. Servers apply changes within about 30 seconds.
Analytics with history
Violations by check and category, players and performance, kept 7 to 90 days depending on plan.
Stays out of the way
Packets decoded off the main thread. About 1.8 ms per server tick with 100 players in our tests.
Simple monthly plans
Every check and the cloud dashboard in each plan. Cancel any time.
Starter
One server, fully protected
€7 / month
- 1 server
- 50 protected players
- 7 days of history
Pro
For growing communities
€15 / month
- 3 servers
- 150 protected players each
- 30 days of history
- Discord webhooks
Network
For networks and large servers
€35 / month
- 10 servers
- 500 protected players each
- 90 days of history
- Configuration history
Questions owners ask
Which versions are supported?
Paper 26.2 with PacketEvents and Java 25. Clients on 1.21.2 and newer get full checking; older clients through ViaVersion are checked with reduced precision.
Will it ban legitimate players?
No anticheat can promise zero mistakes. Snowy keeps them rare: bounded tolerances, decaying levels, and punishments only after several confident flags. Silent mode lets you watch first.
What does the player cap mean?
How many players Snowy protects at once on each server. Players above the cap can play but are not checked until a slot frees up.
What if the cloud is unreachable?
Servers keep a signed license lease valid for up to 72 hours, so protection continues through outages.
What about Bedrock players through Geyser?
Bedrock clients have different physics and Geyser translates their input, so Snowy exempts them by default instead of guessing.
Can I cancel at any time?
Yes. Plans are monthly; cancel from the billing page and your license stays active until the end of the paid period.
Set up in minutes
Install the plugin, paste your license key with /snowy license set, and manage everything from the dashboard.