How can we review Surpriise without revealing the surprise? The publisher's description is deliberately vague, and we wouldn't want to spoil the program for you. We will say this, however: the publisher calls this "incredible desktop entertainment," and we call it "a one-trick pony that provides approximately three minutes of entertainment."
What kind of surprise are you in for? It starts with a little animated gift box with hands and feet that dance when you mouse over it. Click on it, and the surprise starts. We won't ruin it entirely, but we will tell you that it involves music (which we suspect is being used without the proper licensing) and animated characters. We will tell you that it involves only one song, and animated characters that do only one thing. There are no settings, no Help file, no options of any sort. The program performs--briefly--and that's just about all that can be said for it. We were vaguely amused by it, but honestly, not enough so that we would have downloaded it if we'd already known what it did.
Surpriise is free. It installs and uninstalls without issues. We do not particularly recommend this program; it does provide a few minutes of silly entertainment, but on the whole, it's not worth bothering with.