Could you also share the differences you perceived between Arch and Void ?

I don’t remember exactly but when I exported my google calendar to switch to framagenda I failed twice before finding the right format. I would advise you to try every format available.

Did you chose the right export format from gmail/Google contacts?

I only played with Prince of Persia One and Two and the trailer really reminds me of episode 2 with a 2D feel. This looks great.