So I recently took a look into a game that I had heard about before but had not actually played until recently, and consider this a recommendation to look into it.
Treasure Adventure World is an upcoming remake of a game called Treasure Adventure Game, the original being a fun 2D adventure game combining platforming with an open world of islands to explore, lots of sub-areas and rooms to search, and a multitude of hidden treasures and secrets to find. Think of it like Wind Waker mixed with Metroid, but with a lot more focus on platforming. It's really hard to describe the game without showing it off, however, so I recommend at least first going to Treasure Adventure World's website, where you can download both the original game for free and the current demo for the remake. Try them both, and if you like the game and want to see the remake, place a pre-order for the final product.
And yes, there's a slight ulterior motive to this advertisement for the game. At the moment, they have gathered about $11,700 for the game, and they currently have a goal of reaching $17,500. If they reach said goal, they will be able to commission fully animated cutscenes for the game, and having seen the work-in-progress for the opening cinematic, based heavily on that from the original, I am really eager to try and help them reach this goal so that these can end up in the game. So if you like the game, please spread the word so that they can reach their goal and make the game even more awesome.