This was a really fun little puzzle game! Assuming that the keyboard controls are used, the game controls well and is easy to pick up and play. The random events add lot to make the gameplay interesting, and the 'first event I ran into' (for spoilers, if it matters lol) was a great chaotic way of introducing challenge into the gameplay over time.
For a few small nitpicks that probably could have been alleviated if it weren't a 2-day jam, although the sound effects are also great, some music would have made the game even better. I also think that a font different from the default Unity font would have been nice to have as well.
Lastly, I don't exactly know what triggers it, but I also ran into a small bug where I was able to move blocks around and drop them even after a game over. The blocks would also run down the wild card counter and put it into the negative values after dropping them. However this didn't always happen and it didn't affect the experience too much either way.
FUTURE EDIT: A small little thing I just noticed that's really neat is that this game seems to lightly tie into at least 5 out of the 7 possible themes that could have happened in this jam: Chaos since that was the chosen theme and with its random events, Gravity with how the blocks drop super fast, Stacking with how you literally stack blocks, Immortality in the form of <spoiler character lol>, and Rain in the form of the rain random event. Not sure if that was intentional or not, but if it was that's really neat lol.