Simple wireless?

I have an IMU connected to an Arduino UNO and send serial data to Unity. I would like to simply remove the serial cable but not too sure where to start. I see WiFi, Bluetooth, RF, etc. If possible I’d like to keep what I have, I just use Serial.print in Arduino and read the data from the serial port in Unity, just drop the cable.

If possible I'd like to keep what I have, I just use Serial.print in Arduino and read the data from the serial port in Unity, just drop the cable.

XBees, Series 1 (point to point), would be perfect for that.

There are serial to wireless devices on the market. Don't have any personal experience with them.

I don't know what Unity is, but Bluetooth is just serial-by-wireless.

...R