It have been awhile, pretty hard for me to focus on 1 game and finishing them.
Keep rollin rollin roliin
Imagine a pinball game combine with metroidvania, you get this pretty neat game. The only game that really have this mechanic in the past was Sonic Spinball. However, this game done much better with much bigger world, as well as unique pinball arena. The game is pretty easy to play, but it required quite precise timing for several mechanic, making it kinda annoying especially if mistiming a button press can lead to several minute backtrack. As for difficulty, yes the game is quite difficult. You dont have any big penalty for dying aside from losing several currency. In fact one of the side mission required you have at least 50 "deaths" for it to trigger.
I managed to 100% this game (both achievement and collectibles) which made me quite happy since it have been since i able to clear a game (last one was Shadow of War & Assassin Creed Origins iirc). The gameplay mechanic is easy, you have standard pinball mechanic with left and right paddle, ability to roll the ball when you are outside the arena, swing around with rope, swimming underwater (yes you can, late game) as well as do a tricky jump via sticky bomb. The artstyle is cute and feel like nice child artbook, with soothing eyes colour palette. Only problem with the game was the it is kinda clueless and easy to get loss in the game because it only gave marker toward destination without knowing what ability you needed before you can proceed.
This game is neat indie games with unique gameplay. I highly recommend because it is not easy to find something new like this game. Although sometimes it is quite infuriating with the timing of certain part, regardless it is pretty chill game.
Alternative : There is no pinball game that i played, so i will recommend game with similar artstyle and feeling. Toki tori 2 (yes you can straight play sequel) , Song of the Deep, Fortune Summoner & Waking Mars.