This is a classic retro format and good for teams starting out on their agile journey.
Instructions for running successfully
To start the retro (if everyone has laptops/phones) encourage everyone to play 5 mins of Pacman and find out who's the best player int he group: https://www.google.com/search?q=play+pacman+doodle
Showing one at a time, ask each person to think of one way of working, process, interaction, build artefact etc from the last sprint which matches:
GHOSTS: What are we running away from/putting off doing but which could end up being a problem?
CHERRIES: What did we find/do this sprint which turned out to be a nice surprise/easier to do than expected/had really good consequences?
MAZE: What has confused you/had you going round in circles this sprint?
Then go around the room and ask for each person's response
Encourage discussion and note down any actions which can be taken
