Nice first game! My feedback is pretty much the same as the comments below. More variety and features would make this game from good to excellent! As an artist, I recommend adding some shadows and slight colour variations to make the grass and or assets feel more 'alive' however, considering this is your first game it is very solid!
Awesome game! I like the variety of upgrades, it makes the gameplay different each time I replay. the game is polished and I didn't experience any bugs. As an artist, the art style is great! My only nitpick is probably brighten up the dark colours in the background. Overall, a very solid game!
