PS Plus March 2016 games lineup appears to have been changed without any prior notice in North America. The game that was removed was Super Stardust HD for the PS3, which is indeed a very old game for the PS3 and it is still available as a PS Plus freebie in Europe.
The official PlayStation blogpost didn’t mention any changes for the listed game but now that the games are finally available on the store, Super Stardust HD for PS3 has been replaced by I Am Alive for PS3, which is an Ubisoft published game.
It is not yet known why Sony decided to change the lineup just before it went live, because even on the North American PlayStation blog, the games that were listed for March 2016 included Super Stardust HD for PS3.
Nevertheless, you can check out both of these games below, and if you have an EU or US PS Plus subscription, you can get either one of them for free.
I Am Alive is actually the most recent game which was originally released on PS3 in 2012. The game was usually remembered as a The Last of Us lookalike because of its post-apocalyptic world and gameplay. It was a short experience that received fairly average reviews.