The original version of Superfrog was also delisted from GOG.com between March and May of 2016.
Superfrog HD was presumably delisted from the PlayStation Store, Android, and iOS around this time as well.
Superfrog HD was delisted from GOG.com around May 25th, 2016 and shortly after on Steam on May 31st, 2016. pages Team 17 Superfrog HD page GOG.com page