YOU SAID:

Minecraft is a game that I have wasted many hours playing.

INTO JAPANESE

Minecraftは、私が何時間もプレイして無駄にしたゲームです。

BACK INTO ENGLISH

Minecraft is a game I've been playing for hours and wasting.

INTO JAPANESE

Minecraftは、私が何時間もプレイしていて無駄になっているゲームです。

BACK INTO ENGLISH

Minecraft is a game I've been playing for hours and wasting.