Microgaming designers never seem to save efforts when working on their projects, and the proof is the slot "Four by Four", which has a completely clean theme, with fine details and lively colors, this added to the audio effects, including a soothing background soundtrack and crystalline sound effects, all these to create a lovely and very enjoyable atmosphere for the player.
Four by Four is not an ordinary slot because instead of having 5 x 3 reels, it is a compound of 4 rows grid and 4 columns in which five different symbols quickly fall vertically as each turn is executed or when lines are completed both vertically and horizontally with figures of the same type. The symbols used in the game are: star, ring, diamond, plus sign, and X-shaped cross lines, and each line of 4 completed is paid this way: 5 x, 3 x, 1 x, 0.5 x, and 0.2 x by the value of bet. Obviously, the lower the prize awarded, most common is the appearance of each type of figure. The star also serves as substitute, in the game is defined as a wild symbol, and has no multiplier effect when helps to build lines.
This game also has two special features that are free spins rounds and free nudges rounds, each triggered by the eventual appearance of four symbols at the same time with the words "free spins" or "free nudges”. By the way, if last two special symbols appear on some line that is completed, both, standard and special symbols disappear without contributing to trigger the special feature.
Although the game is totally fun and perhaps addictive, I think the payouts are too low and virtually ensures player loss. The best paid lines are formed by stars and rings, and the truth it's really lacking lines formed by stars and a line formed by rings is a little rare. What you earn by completing one of the most common lines is not enough, even to cover bet value, so that you always need to complete more than one line to try recovering the bet, and of course, it is not uncommon to obtain no profit during 3 or more turns. To be frank, I think that would be necessary for diamond figures, plus sign, and x-shaped crossed lines, double their prize at 2 x, 1 x, and 0.4 x for a fairer game. Of course, all of these I have said according to what I experienced personally with this slot game for several sessions and it is possible that someone can reach better achievements in Four by Four slot game.