small prize is nothing, it just means you have good skills, major win is chance for a speaker. Stacker is a top skill based arcade machine, where you stack the blocks. You can win a small minor prize, usually a prize that is worth even less than a play on the machine. You can win major prize, with very good skills. Have fun! And of course, report any game bugs. Thanks.
Current major prize winable: JBL speaker. Small Prize: No small prize.
