Thank you for playing! I would like to get the balance to a playable state. At the moment it is very difficult to grow a plant. As for the time between rounds, in this version of the game it starts at 30 seconds and increases by 5 seconds each round. This is really short to start with, so in the new version I will increase the start time. Also about spawning plants, the further away from the dome you are, the greater the chance of multiple plants spawning next to each other. I'm glad you enjoyed collecting plants from the rover, I'm also going to make a bigger collider on the plant to make it easier to collect them on the go.