All the games in the collection are free-to-play. You can enjoy the base game as often as you want for as long as you want. And that will never change.
No lives, timers or energy to replete.
But if you want some quality-of-life improvements or unlock progression rewards faster, it is also possible with the Games Editions.
All purchases will work for every game and every platform tied to your game account. This is not an automatically reconducted subscription : if you buy 30 days, you'll have to come back and buy more if you liked the experience. This way, you won't have to worry about cancelling anything if you want to stop playing.