

In the 80’s we had games to learn touch typing that were very helpful and also quite fun, compared to old school methods.
Here’s a site that claims to have that sort of games:
https://www.typing.com/student/games
Warning I have no idea if these are good, it’s just a random site a search came up with.

Indefinite can mean both not determined or infinite.
It can not make infinite of course, because at some point the Universe according to current standard model will cool out.
But apart from that no problem, as long as the physical conditions exist to support it.