Oh, I see! The one in the middle is the treasure! I was only missing the one behind the big tree. Cool, thank you!
And sorry for the late response, I didn't get a notification about the reply!
I stumbled upon a mention of MegaDrill on a video of an easter egg in The Talos Principle, and after playing it on Flashpoint, I was curious to check out your other games, so I found Sprite Sequence.
It was really cool discovering this little corner of the internet and the person behind it. I hope life is going well for you! Are you still working in game development?