When you began, you must click on either moss or liverwort*. You have 3 of each. Click to plant them. When they are all planted, click on the rain cloud. After that, your mouse represents the wind, and you can spread the spores (like seeds) around to plant more. Watch them decompose. Watch the ferns grow. Watch the dinosaur come.
I got this idea from Brain Pop. Their video on seedless plants inspired me. All art was mine. All coding was mine. Moss and liverwort are seedless and are invascular (they don't use vascular tubes). Instead of seeds, they use spores. Spores can be blown away by wind to new places, and with the right conditions, they might grow. When mosses decompose, they create dirt, where new plants might grow, like ferns. With ferns, animals can come, like dinosaurs.