Is it correct sentence come and enter into the world of fun?

The sentence "Come and enter into the world of fun" is grammatically correct, but it could be improved. Here's why:

* Redundancy: "Enter into" is a bit redundant. "Enter" implies entering something.

* Word Choice: "Come" is a bit informal.

Here are some better ways to phrase it:

* Enter the world of fun. (Simple and concise)

* Welcome to the world of fun. (More inviting)

* Join us in the world of fun. (More active and engaging)

Ultimately, the best version depends on the context and tone you're going for.