I like the retro style, and I'm a big fun of racing games so it was a good surprise to find one within the theme :)
I was a little bit lost at the beginning about how to properly play this game, because if I do the race to crossing the finish line first, I got a poor score, and if I take my time to put water properly on the plants, I don't do the race anymore, crossing the finish line last but with the highest score.
If we are just racing for watering the plants before the ennemies, maybe it would have more sense to have an "open world" map with a timeout ? Don't know, just an idea^^
Still I loved the idea !