not a teacher
I will play next week. (future tense)
I will be playing in the afternoon on Tuesday next week. (future continuous tense)
Future Continuous Tense
The future continuous tense expresses action at a particular moment in the future. The action will start before that moment but it will not have finished at that moment. For example, tomorrow I will start work at 2pm and stop work at 6pm:
At 4pm tomorrow, I will be working.
At 4pm, I will be in the middle of working.
When we use the future continuous tense, our listener usually knows or understands what time we are talking about.