Game with vue.js - memory matrix

[yoon12345678910]

Hi, I made a simple web game using vue.
Games improve your memory by remembering tiles correctly.
I saw this game on the Lumosity site and made it simple.
I hope you can play the game and tell me what is lacking.
thank you

GitHub:
https://github.com/yoon12345678910/MemoryMatrix

Demo:
https://yoon12345678910-memorymatrix.netlify.com