Four By Fourby Microgaming

This may look like a simple game, and it is, but dynamite can come in small packages. The rules are easy to follow and the payouts can be awesome. This fixed odds game by Microgaming has potential. All you have to do is match four blocks in a row; vertically or horizontally – that's it! Not all symbols are worth the same though. Yellow Circles can pay 3x but Blue Cross icons pay ½ your bet. The Purple Star is wild and will substitute for anything else to help make a winning line. Get four of them to win 5x.

One really fun thing about this game is that winning lines disappear and new blocks fall into place so you can win even more. Get four “Bonus Nudge” icons and you can nudge any row or column for even more winnings. If that wasn't enough just line up four “Free Plays” to get four more tries without spending anything.