In the early summer of last year, some of the visual novels I had imported from Japan were detained by the Canada Border Services Agency (CBSA) on the grounds of potentially constituting obscenity (material which is demonstrably harmful to society and not merely offensive or in bad taste). In Canada, obscene material cannot legally be brought into the country, so trying to import such material will likely result in its physical destruction 90 days after a verdict has been reached (unless you are able to write a convincing appeal during that time).
While I was waiting for the Agency to finish its review of the titles it had seized, I looked into which titles the CBSA had examined in the past in case an appeal was necessary. I figured I'd share my findings with fellow Canadian visual novel fans to help them avoid potential headaches in the future. If you plan to purchase a visual novel listed under "Prohibited Titles", I highly advise buying the Download Edition instead of the Package Version (or get both for a $5.00 surcharge).
I personally don't agree with some of the verdicts rendered, and several titles have been re-evaluated with different results (the most recent verdicts are shown). Titles that have never been reviewed by the CBSA are not listed for obvious reasons, so this list cannot be considered comprehensive or final.
Come See Me Tonight
Do You Like Horny Bunnies?
Family Project ~Kazoku Keikaku~
Heart de Roommate
Kana -Little Sister-
Let's Meow Meow!
Viper STG -Limited Edition-
Yume Miru Kusuri: A Drug That Makes You Dream
Cosplay Fetish Academy
Discipline -The Record of a Crusade-
Gibo: Stepmother's Sin
Hitomi -My Stepsister-
Jewel Knights Crusaders
Lightning Warrior Raidy
Lightning Warrior Raidy II
Little My Maid
Pretty Soldier Wars A.D. 2048
The Sagara Family
Tokimeki Check In!
Yin-Yang! -Xchange Alternative-
(Compiled from the CBSA's Quarterly Lists of Admissible and Prohibited Titles, republished at Gomorrahy.com. Up-to-date from July 2003 through September 2011.)