Since I deleted the Carrd site for this game, I have moved the Q&A here:
Q: Is this game directly based off of Chao Garden?
A: If you're talking about the setting of the game taking place in the Sonic universe, then no. The Exedra Chao world is in the Xicon Exedra universe.
Q: Can our Chao be added to the game?
A: No. This is for the Exedra Chao only. It'll make no sense for Chao of others to be added.
Q: If this is to take place in Xicon Exedra, why are there locations that are from the Sonic universe?
A: The answer is simple and it's that the locations are replicas in the Exedra Chao world. However, not all locations from Sonic are in it. And as you can tell, there are locations that are not in Sonic that are in this world.
Q: Do we know how many Chao/Stages there will be in the final version?
A: 49 Chao and 50 Stages of a total of 7 Waves.
Q: Is there a chance that the final version will not be reached?
A: Sadly, yes. I may not know if I can finish the game entirely. If I put an end to development, I will deem the game completed, nonetheless.