How I do a coloring game?

Hi bko
It’s best to start a new post. People are more likely to respond to a new post. If possible, please include a screenshot of your relevant events or the process that you’re using. It sounds like multiple objects are selected but without know what your events are, it’s tough to suggest a fix. You might need a pick nearest object with Cursor X and cursor Y. That would pick 1 object in case your objects or their hit boxes were overlapping.