Thanks for playing and for the feedback. Glad you enjoyed it. The goal is to get them to breed and then to get the egg to hatch. You do this by keeping chameleons alive and within a sweet spot of conditions. The chameleons’ needs are conveyed through their colour. A colour guide can be found in-game (but is not obvious to find and this isn’t something I admit I need to change) for instance, red is hungry, blue is thirsty, green is happy (more likely to breed), light shades are warm temp and darker shade are cool temps etc. There is also a YouTube video of how to get to the guide on the game’s page.
Thanks again for your feedback!