Rat Simulator
Playing now
0+0 vs. yesterday
0.0%of peak
All-time peak
39 Sep 2026
Update history
A permanent record of every observed change.
Playing now
0+0 vs. yesterday
All-time peak
39 Sep 2026
A permanent record of every observed change.
| Status | Key | Previous value | New value |
|---|---|---|---|
| Added | ACH_BOSS | — | Pest — Defeat a boss. |
| Added | ACH_EXTERMINATION | — | Exterminated — No more rats.. |
| Added | ACH_FELLOW_RATS | — | Fellow Rats — Save a Rat. |
| Added | ACH_LORD | — | Lord of Rats — You now rule over the suburban neighborhood with your fellow rat companions. |
| Added | ACH_LOVE | — | Share the Love — Infect the house with your rat buddy. |
| Added | ACH_PLAGUE | — | Plague Bearer — Poison a human. |
| Added | ACH_POISONOUS | — | Poisonous — Infected the food meant for humans! |
| Added | ACH_PROFESSOR | — | Professor Rat — Infect more than four houses. |
| Added | ACH_RAT | — | Rats — Infect a house. |
| Added | ACH_SCIENCE | — | Scientific Rat — Upgrade your rat's capabilities. |