I really like the idea! I've never really played card pack opening games but maybe this is how I start? I love the different art styles that you have for the cards and it works so well! Love the meme references in the cards too.
The way the cards move around when you're in the collection screen is fantastic too.
Some feedback that is hopefully useful:
- The Upgrades screen following the cursor is fun and interactive, but also made me motion sick with my high sensitivity mouse. If it had less wiggle it would be easier to read the whole chart.
- When I bought packs I couldn't tell if I've successfully bought anything so having a louder noise (I think there was a sound?) or some sort of +1 animation might be good to have as an indicator.
- I think I gifted or sold a bunch of my holo cards even though I had the Regular one on showing which made me sad :(