I read a review of Rolando 2 in the app store. They said that they acquired it through some free midnight sale? Is this true? If so when was it?
No. I highly doubt it. ngmoco wouldn't put it on sale at all, let alone free so soon after the release. Maybe in 20 years it could be free.
It was never free. Look at App Activity on appshopper: http://appshopper.com/games/rolando-2-quest-for-the-golden-orchid