Eaglecraft 1.15

You can map your keyboard and mouse settings just like in the standard Java Edition.

Mr. Henderson stood at the front, his hand on the light switch. He looked at the rows of glowing screens, then at the synchronized clicking of thirty mice. He didn't yell. Instead, he sat down at his own desk and opened a browser. eaglecraft 1.15

I was unable to find a specific, standalone game or official software release titled You can map your keyboard and mouse settings