Preliminary: Yay! Fast-paced gameplay with cute music and Look, always like that. Nothing spectacular so far, but pick up and play, got some sort of dinosaur I rode, as well as the usual skateboard. Love the overworld's Look. Etc. I didn't much care for the first Adventure Island, can't recall why (ah, because the first one was essentially a port of Wonder Boy and might as well just play that). Anyway, on with the gameplay! (I'm supposed to be playing my OSRS Ironman tho ahhh). Oh, and I of course am playing the original release on NES.
Day 1
Likely what I am most loving is the ability to run, something I always love love and sort of expect as a basic feature for platformer games now that we are past Super Mario World. Also like SMW, you kind of have to choose between an attack, say with your dinosaur, or run sometimes. Good balance there. And they sure give you a lot of Eggs to open, at least at the start, I keep getting all these animal helpers! Haha. Speaking of, it's Purple Lapras! haha 
Omg I got a pterodactyl! That seems super OP! I suppose it's like the flight power-up in Marios :-p Time for the first boss then for real need to get some OSRS time in but this is thoroughly impressing me so far (plus is that genre/vibe that I can't help but get hooked to. The chronology project was intended to teach me to appreciate other genres, instead it's mostly just helped me come to terms with it being okay to have preferences haha) . I beat that first boss really quickly, and haven't looked to a guide or the manual at all :-p I suppose it is an NA-first release, and we often see those are less Nintendohard, but surely I will be regretting that at some point since I now see just how many worlds/islands there are 
Day 2
Welp I keep going world to world, still having fun! On the Ice World now, flying along. Turns out the Pterodactyl isn't that OP, because the game designers clearly put thought and love into this game and the level designs take into account all the different dinosaurs. There's still one more dinosaur/power-up I haven't come upon. I love the dinosaur/power-up select process before each level. Such a neat idea and you can try out different variations of gameplay that way, and this is ripe for speedruns with teh run feature etc, and I loved stumbling upon Secret Rooms on my own, and so much to love about this. I also like that you can store up the dinosaurs, so if you lose one and had 2 "in stock" you still have one. Hard to explain. Just play it!
Even tho I wish there were a larger variety of tunes, I still haven't gotten annoyed with these same few (and the occasional new one).
Even tho one could claim this "steals" a lot from Mario, it also feels entirely fresh and has roots in Wonder Boy and I dunno, it just doesn't feel like stealing. Plus, this was the closest a game has come to giving me "that feeling" that Super Mario World gives me, which has the benefit of decades of nostalgia, replays, and being-one-of-my-only-games-at-my-dad's, etc. etc. So , uh, that's a really good thing. Will this be the next Castlevania? The next action platformer that gives me that permanent Favorite/beloved Feel?! It's odd that these mid?/late-game levels are actually more fun than the beginning, usually I'm burning out on 80s and early 90s action games by that point cuz they get so difficult. This has that fun "I'm flying along! and I barely survived that with quick dodging thanks to responsive controls" that I only get with a few other games, namely SMW. I truly felt like I got to know the controls and it's only Day 2! (Albeit over an hour of playing ha, so I've had time to learn it). Anywayyyy, I love it! And I love the feeling of being good at a game, and I think it helps that this has similar controls and learnable mechanics and tight responsiveness like my beloved SMW.
I beat the Ice World now too! Flying along! I like that I haven't had to abuse, well even barely use, savestates! Feels like I'm truly entering the 90s gaming, and nearing the PS1 era gaming, where I know I can actually manage their difficulty levels :-p (and when not, they either have a difficulty option or it's only very late game)
Wait... I just remembered this is on NES not Genesis. Makes it even more impressive!!! I realize this was still the heyday of NES in general, and especially in NA where this game was first released, but sheesh. Very impressive. I haven't even had to complain about any sprite flicker/lag and whatnot. Well-played, designers. But I did just read there are eight islands! This is long, indeed for an NES platformer especially! I thought I was on the last island and was about to beat it but looks like this will be a multi-day game, and the best part is, I'm not even bemoaning it!
I finally have all dinosaurs/power-ups and it seems the purple lapras is still my favorite. Both Look-wise and use-wise. (and controls-wise).
(I just had to jinx it, I had my first instance of sprite flicker/lag in this Island 5 Cave Island >.< And the difficulty is definitely getting higher and I had to use savestate in the middle of a level. But I'm still loving it and forgiving it!)
Is... is this an evil angry Eggplant following me now? I thought only power-ups came out of eggs?! 
The Cave Island boss was super easy :-p just stand a bit to the side of it on the platform (or get lucky and spawn there for the first platform and figure this out naturally :-p ). Imma play some OSRS Ironman for the rest of the night since it's already almost bedtime, but nice! Loving this. Oh boo tho I wont get to play this tomorrow cuz I'm chaperoning a football game :(
Day 3
Wasn't able to play it yesterday cuz of the football game, so I'm excited to hopefully finish it today! On the boss of Cloud World right now! I'm still absolutely loving this. I can confidently place its gameplay as equal to Castlevania and SMW for me as 10/10 type Plays. I just love it. The tight controls help. So impressive for an NES game too. I really just stick to my Purple Lapras for the most part, but still nice that you could play this so many different ways. It keeps reminding me of SMW, and while this will certainly be a Favorite for now, I wonder if it could creep up to an Ultimate even some day!
I like that instead of the overused time limit mechanic of so many of its contemporaries, SMW included, it has the Wonder Boy-style mechanic still (you can collect good to essentiatlly elongate your "time limit"). I feel the level designs and item spawns are well-balanced around this mechanic. Also, I like that there aren't headachey puzzles (at least, not yet, and I'm nearing the end) that bog down the pick up and play, yet still challenging, fun platforming. Another issue I have with many of its contemporaries, including the Marios.
I'm on the final world! The Volcano Island boss was really easy again lol, I suppose that is one potential complaint, the bosses are a bit lame, buttttt I do appreciate it. Makes it more approachable. But yea, definitely a bit lackluster in terms of their mechanics. Their Looks were all great imo.
This final world is definitely having the sprite flicker/slow-down more often, but I'm still enjoying it a lot. Pretty wild that they're still introducing new enemies in the last few levels, including the level to reach what I assume is a demi-boss of the final island? Wait lol it was just a 2-part boss and uh, it was ridiculously easy for a final boss. Especially compared to the difficulty of the last couple levels (which still never got to "Nintendohard" levels, I'm telling you, something about NA-first or NA-only NES releases). Either way, cute ending tune and great colors, tho nothing sentimental or powerful

Look: 9.5/10 Cute. That classic SMW era Look, and yet for the NES! Impressive. Great dinosaur characters, and all the bosses were neat. Tho it wasn't about sentimental horizons and zone out vibes, it has that epitomal cute early 90s Look to it that I love so much, and on the NES no less!
Sound: 9/10 Never got tired of it. Nothing sentimental or particularly great though, just good fun tunes. They might grow on me like how SMW goofy/fun tunes did, with future replays.
Play: 10/10 Pretty bold of me to put this on first playthrough but yea. Seems clear to me. This my kind of game.
Feel: 9.5/10 Such an impressive first playthrough. And I could even see the Look and Sound further growing on me, bringing this to an Ultimate. Unlikely to ever be a Perfect Rating, but you never know!
Attachment: 9.5/10 I know I will be returning to this!
Overall: 9.5/10
Completion: Main Story
Playtime: ~2h 15m