Awesome game! The amount of cards here is insane! And it was really fun when you could stack certain effects and it was super satisfying when a strategy that I picked paid off! I increased my hand size a bunch, then got cards which increased the probability of legendary cards appearing, and then used the card which let's you fill your hand up with random cards! It was really fun seeing my gamble pay off, and although I only had 65 years to spare, I managed to save humanity.
Your artwork was fine, don't worry! You'll get better at it as you go! And for one person this game was exceptionally well-made and fun.
One thing I would add is a counter for how many passive cards you have, because often times I looked at a card that said "plus X from passives" when I didn't even know how many passives I had, or if some projects were passive or active only for one round etc. Made it a bit more difficult to make a strategy. Also, a bit more feedback when getting resources or time would be appreciated, maybe some particles flying to the circles so I know that it increased instead of the number instantly changing (a little bonus you get with this is the visual feedback of your decision).
Overall, great jam entry!