The theme is signal...

OK... You are a weird little gremlin thing that is safe in a bubble in the centre of the screen. You leave your bubble to follow signals to collect... egg... token... things. You return to your bubble to store the things before the time runs out.

Reality shifts and a new signal is created. There's a shift in the colour of the world and hidden things are revealed. This could be walls or monsters or other things which impede your progress. You must venture out again and collect the things. Who knows why? Before the time runs out you return to your bubble. And the world shifts again to a knew signal and colour state and new obstacles.

And so on.

It's 3am here so it's time for a snooze.