Awesome game! This might be one of my favourites. I managed to get four cards (I also love the choice to make the collectables relate to Chinese New Year). You had some very clever puzzles and great level design.
To make it even better:
- Improve the crate physics
- When there are lots of the same colour portals on the same screen, it is hard to know the relationship between the portals. For example, there are 4 blue portals on a screen and I step into one. I don't know which of the other three portals I will go to. This might be intentional? I wonder if having more colours would work, so there are only ever 2 of each colour portal on screen. It might still be a good challenge.
- It would be good to know how many cards I haven't collected yet. For example if I could see four cards at the top and two empty card slots left, I would know I still have to look for those two cards.
You have done an amazing job!