This game is an open world Mario game similar to Mario 64 and Mario Sunshine giving you a lot of freedom to explore.There is so much to do: so many side objectives and collectables within viewing distance that it's sometimes overwhelming at first since it's hard to stay on objective with teasers keeping you off the beaten path. With that said, this game is filled with content and let's you progress at your own pace. If you rush through the main campaign it will last you around 10 hours, which opens up even more levels and collectables via post game content. To do everything it can last 100s of hours if you explore on your own without any online guides/tips. There are coin collectables you can use to purchase new clothes for Mario or cosmetics for you ship. Collectables feels more like rewards for discovery rather than a collect-a-thon, and at no point does it feel that the game is hand-holding you through it with it's natural progression system.Love the visuals with its amazing vistas in full HD, especially on TV mode. There's a lot of personality in the characters as the emote very well via animated body movement or facial expressions. You can snapshot the game at anytime and see Mario's various reactionsWriting/dialogue is very good, or at least whimsical as there are fun micro stories among characters within levels. Main plot is generic, but you don't play a Mario game for the story (except for the Mario RPG series). Bowser captures Peach and tries to wed her, but wants to collect all the best gifts from different kingdoms. You play as Mario and try to stop the forced wedding from happening.Music is also very good, including orchestral music along with some having vocals . I like how the music complements what you're doing and where you are. For instance if you reach the peak of a high tower, the music cuts off and all you hear the wind blowing.No power ups, but with your pal cappy able to take control of any enemy Captain Ginyu style (Dragon Ball Z reference). All enemies feel vastly different from each other from attacking to solving puzzles/collecting out of reach items. There are 50 to collect/capture .Power moons main collectables in the game (883 Total), which powers your ship to travel to new kingdoms/worlds. There's a nice enycopedia/log of time stamped moons you collected and where you obtained them via check mark on the map screen. Love the map design as it's displayed like an amusement park pamphlet with description of landmarks/attractions. There's also a fast travel feature when you reach a flag checkpoint, as you can warp between them.There are also region exclusive currency (purple coins) to collect, which unlocks costumes for that specific region you collected the coins in.Mario controls more fluid than ever before, especially with his new momentum based roll, and ability to do toss and springboard off cappyNo 1up system. When you die you lose 10 coins and respawn instantly. Coins are valuable as they can be used to purchase game tips for 50 coins each, costumes/cosmetics that can be upwards to 1,000 coins each, moons for 100 coins each, among other thingsMotion controls. Some shaking is involved, but it's very minimal and only required in a few levels/mini-games. Feels odd shaking the whole system in handheld mode thoughThere's co-op where one player controls Mario and the other Cappy. This is not a full fledged co-op affair as the person who plays cappy has a similar experience as moving the cursor around in Mario Galaxy.2D segments are pretty neat with Mario changing into his 8 or 16bit counterpart attached to the wall around a 3D backdrop.Tons of mini-games to be had; some utilizing the cap capture mechanic as well as traditional Mario platforming. There's also an online leadboard for how may times Mario can jump rope.Boss battles are very creative as they're a fun puzzle in itself, using a hat transformation you used through the entire level to defeat the boss.Amiibo. There are wedding Mario, Bowser and Peach Amiibo which unlocks costumes and help you find moons. These costumes are not locked via these amiibo, and can be purchased via in-game coinsOverall, most fun a had playing video games in a while. Get ready for a fun filled adventure