Pro Mahjong Kiwame is not the typical 2-player mahjong game normally found in MAME. In fact, this is one of the few mahjong games that maintains as much of the original feel of true Japanese mahjong as you will get in MAME. This means no items for player advantage, minimum to no cheating from opponents, and no stripping girls. This time, the only motivation to continue playing the game is the game itself :)
The game is a tournament based 4-player mahjong game. The player begins the tournament in the preliminaries and plays a series of mahjong matches to advance to the championship final to win the tournament.
However, due to the arcade nature of the game, each match in the tournament is severely shortened. A typical match normally consists of 2 rounds: East Round and South Round. Each round consists of at least 4 hands of play. With that in mine, an ordinary match would contain at least 8 or more hands of play. To shorten the match for arcades, only the last 2 hands are played: South Round 3rd hand and South Round 4th hand. Whoever has the most points at the end of the match wins and advances to the next round of the tournament. Only the last match consists of 4 hands: East Round 1st-4th hand.
As always, the further along in the tournament the player gets, the harder the opponents become. Though not in the sense of cheating or opening hand advantage that you see in other mahjong games. The game seems fair in how it distributes the tiles to each player.
Visually the game looks rather dull. Opponent's are displayed in single frame portraits and the mahjong table is shown overhead with each player's hand positioned along each 4 sides of the screen with the dead pile centered in the middle. Overall, nothing too special.
Although not all the rules are used, ie rules for remaining dealer, in order to keep the length of the game shorten for arcades, Pro Mahjong Kiwame is still a great title to play for anyone curious to understand, for the most part, how real 4-player Japanese mahjong is actually played.