As of my last update (October 2023), some new synthetic drugs are indeed becoming more and more popular around the world. Here are some synthetic drugs that are particularly noteworthy: 1. **Fentanyl drugs**: including fentanyl and its derivatives with various structural variations, this type of drug is usually dozens of times stronger than traditional opioids and has caused many fatal overdose incidents. 2. **Ketamine (KETA)**: This drug was originally used as an anesthetic, but in recent years it has been abused as a hallucinogen because it can cause a strong sense of dissociation. 3. **Synthetic cannabinoids (such as K2 or Spice)**: These compounds are designed to mimic the effects of marijuana, but their composition and effects are often unstable and may cause serious adverse reactions. 4. **Synthetic hallucinogens**: such as the 2C series and other unstructured psychedelics (such as NBOMe substances) are becoming increasingly popular, and they can cause strong visual hallucinations and sensory distortions. 5. **New stimulants**: such as imitation methamphetamine (ice) and other newly developed psychostimulants, which are used in many parties and clubs. Please note that the prevalence of synthetic drugs may vary by region and time, and the above information is only an overview of some trends. If you have more concerns or want to know more about specific drugs, it is recommended to refer to professional drug monitoring reports or public health resources.