Based on the user reviews of Slither.io, here are the top 3 cons and pros: **Pros:** 1. **Easy to play**: Simple controls, easy to learn, and enjoyable gameplay experience. 2. **Addictive**: Engaging and challenging, with a competitive edge that keeps players coming back. 3. **Multiplayer fun**: Compete with others, chat, and climb ranks in real-time multiplayer mode. **Cons:** 1. **Limited gameplay options**: Basic gameplay with limited customization and no innovative features. 2. **Advertisements**: Frequent ads and interruptions disrupt the experience and can be annoying. 3. **Glitches and bugs**: Some users experience issues with lag, disconnections, and game crashes. Please note that these are general summaries based on the user reviews and may not reflect individual experiences.