Ah, the legendary 48 member game. Finally got around and playing it. First of all, congrats on pulling off this feat of coordinating the huge number of people. It's more people than a small to mid-sized company for god sake. I guess communication and coordination itself would be harder than making the game.
For the game itself, I think it's quite good. The environment is charming and absolutely wonderful. The dog is cute, both in-game and in the artwork. I would say the gameplay loop is a bit simple and doesn't really have much to go for, but exploring the environment more than makes up for it. I still miss collectathon games and it makes me happy seeing one. The music is top notch though, kudos to whoever made that.
Now for some criticism. Since you are such a large team the standard may be a bit higher. It's only fair. I think the controls of the dog need some tuning. It's so slow forwards and backwards, yet turns incredibly quickly. The jump is also quite strange with that double jump-esque animation. The camera moves a lot, and is quite jumpy. These three points alone make motion sickness prone people like me dizzy super easily. For me I need to give up at around 50 bones just because of that. I suggest adding FOV and mouse sensitivity to remedy that.
The level designs are great, but I think the bones respawn a bit too quickly, this sort of defeats the purpose of needing to explore around the area, and possibly wastes the wonderful hard work of the artist. Also, why place bones on the outer wall where you can clearly see the infinite hole that is the scene? This breaks the world illusion immediately.
Anyway, still a huge congrats on even making the game in the first place. Well done!