World Stadium '90/Gameplay

At bat

 * Joystick: While waiting for the pitch, use the 8-way joystick to position your batter inside the batting box. (All twelve teams have a different batter).
 * First Button: Press and hold this button to swing your bat. If you do not hold this down long enough you may bunt the ball instead of swinging at it.
 * Second Button: Press this button to initiate stealing a base. You must first push the joystick in the direction of the base you would like to steal. For example, if you have a runner upon the first base and would like to steal the second, first push the joystick to the left, then press the second button.

Pitching

 * Joystick: Before the pitch is thrown, you must push the joystick to the left or right, to move the pitcher from one side of the pitch mound to the other.
 * First Button: Before you press this button, you must push the joystick, to determine the speed of the ball. Push it up to throw a slow ball, or down to throw a fast ball. Pushing it in any other direction or not pushing it at all will result in a normal speed pitch. Throwing many fast balls or slow balls will wear a pitcher out faster. Once the ball is thrown, you must push the joystick to the left or right to control the path of the ball on the way to the batter.
 * Second Button: Once a runner is on a base, press this button to switch from the batter/mound view to the infield view where you can attempt to tag out runners who are stealing bases. Pressing it again will switch from the aforementioned infield view back to the aforementioned batter/mound view.

Running bases

 * First Button: Runners will automatically move to the next base, once a ball lands on the ground. Press this button to request that a runner continues running, or that he run before the ball has landed. You must first push the joystick in the direction of the base you would like to reach. For example, if you have a runner headed on to the first base and would like to run all the way on to the second, first push the joystick up, then press the first button.
 * Second Button: As mentioned above, runners automatically move to the next base, unless it is a fly ball, in which case they wait to see if it is safe to run. You may decide that you do not want to wait and send a player ahead. But if it turns out that the ball was caught, you'll need to send him back to the base before he is tagged out. If you were heading on to second base when the ball was caught you will have to send the runner back to first base by pushing the joystick to the right, and then pressing the second button. (If he does not manage to make it back there in time, he will be tagged out).

In the field

 * Joystick: Before the ball is caught by any player you must use the joystick to determine the general directions that the players are running in. Given that is no one outfielder that you will be in control of at any time in this game, all of them will move in the direction that you are holding the joystick in.
 * First Button: Once the ball is in one of your players' hands, push the joystick in the direction that corresponds to the base you would like to throw to, and press the button. If you do not push the joystick in any direction, the ball will automatically be thrown to first base (like you meant to throw there).
 * Second Button: Once the ball is in one of your players' hands, you can run on to any base, by pushing the joystick in the direction that corresponds to the base you would like to run to, and pressing the button. Now that you've learned these important playing techniques it's time to meet the teams for a third, and final for players who favour the Bravos and Hornets, time; their managers and lineups are also different from the two previous games.

Urban League (アーバンリーグ)
Giants (ガイアンツ, lit. Gaiantsu 3rd lineup) - 1: Shiotsuka (しおつか, Hidari, .320 Hon 8) 2: Awai (あわい, Migi, .270 Hon 2), 3: Kuramate (くらまて, Hidari, .340, Hon 30), 4: Arya (ありゃ, Migi, .270, Hon 35), 5: Furuan (ふるあん, Migi, .300, Hon 37), 6: Okataki (おかたき, Hidari, .290, Hon 25), 7: Kometa (こめた, Hidari, .270 Hon 20), 8: Nanao (ななお, Migi, .250 Hon 12), and 9: Saitoto (さいとと, Migi Saki, .150 Hon 0 or Bō 2.74), Makihaha (まきはは, Migi Saki, .150 Hon 0 or Bō 2.50), Kuata (くあた, Migi Saki, .150 Hon 0 or Bō 2.98), Miyamomo (みやもも, Hidari, .150 Hon 0 or Bō 3.54), or Ida (いだ, Migi, .150 Hon 0 or Bō 3.78). The Giants are still at the top of the Urban League's list, and are still located up in the top-left of the team selection screen.

Cars (カーズ, lit. Kāzu 3rd lineup) - 1: Nomuri (のむり, Hidari, .250 Hon 4) 2: Shōyu (しょうゆ, Hidari, .300 Hon 2), 3: Aran (あらん, Migi, .250 Hon 30), 4: Obakawa (おばかわ, Hidari, .260, Hon 29), 5: Takawawa (たかわわ, Migi, .335, Hon 30), 6: Panku (ぱんく, Hidari, .270, Hon 30), 7: Amasake (あまさけ, Hidari, .270 Hon 20), 8: Tatakawa (たたかわ, Migi, .247 Hon 5), 9: Amakuchi (あまくち, Hidari Saki, .150 Hon 0, or Bō 2.54), Ōro (おおろ, Hidari Saki, .150 Hon 0 or Bō 2.66) Kitahefu (きたへふ, Migi Saki, .150 Hon 0 or Bō 3.40) Namakomi (なまこみ, Migi, .150 Hon 0 or Bō 3.54) or Kuda (くだ, Migi, .150 Hon 0 or Bō 3.80). The Cars are still positioned at second in the Urban League's list and are still located in the top-left of the team selection screen.

Drasans (ドラサンズ, literally Dorasanzu, 3rd lineup) - 1: Ikono (いこの, Migi, .280, Hon 10), 2: Tatemami (たてまみ, Hidari, .279, Hon 8), 3: Wawamata (わわまた, Hidari, .265 Hon 20), 4: Omiai (おみあい, Migi, .349 Hon 45), 5: Danro (だんろ, Migi, .278 Hon 30), 6: Uo (うお, Migi, .278 Hon 29), 7: Haihō (はいほう, Hidari, .250 Hon 25), 8: Naramuri (ならむり, Migi, .233 Hon 6), 9: Ishimomo (いしもも, Migi Saki, .150 Hon 0 or Bō 2.82), Omachi (おまち, Migi Saki, .150 Hon 0, or Bō 3.50), Omamoto (おまもと, Hidari Saki, .150 Hon 0, or Bō 3.22), Yokatta (よかった, Migi, .150 Hon 0 or Bō 3.66), or Ikaku (いかく, Migi, .150 Hon 0 or Bō 2.98). The Drasans are still third in the Urban League's list and are still located in the top-left of the team selection screen.

Sparrows (スパローズ, lit. Suparōzu, 3rd lineup) - 1: Itta (いった, Migi, .250 Hon 10), 2: Anata (あなた, Hidari, .255 Hon 5), 3: Warai (わらい, Hidari, .300, Hon 20), 4: Irosawa (いろさわ, Migi, .320, Hon 35), 5: Ikeike (いけいけ, Migi, .260 Hon 35), 6: Māshī (まあしい, Hidari, .250 Hon 15), 7: Shimi (しみ, Migi, .240 Hon 10), 8: Uruta (うるた, Migi, .250 Hon 5), 9: Badā (ばだー, Hidari Saki, .150 Hon 0 or Bō 2.98), Katoto (かとと, Hidari Saki, .150 Hon 0 or Bō 4.12), Naitoto (ないとと, Migi Saki, .150 Hon 0, or Bō 3.30), Katasaki (かたさき, Migi, .150 Hon 0, or Bō 3.10, or Ishiura (いしうら, Migi, .150 Hon 0 or Bō 3.66). The Sparrows are still positioned at fourth in the Urban League's list, and are still located down in the bottom-left of that team selection screen.

Wheels (ホイールズ, lit. Hoīruzu 3rd lineup) - 1: Okotani (おこたに, Hidari, .267 Hon 10) 2: Takahari (たかはり, Hidari, .259 Hon 12) 3: Akagi (あかぎ, Hidari, .277 Hon 9), 4: Aiyā (あいやー, Migi, .270 Hon 40), 5: Pachoku (ぱちょく, Migi, .276 Hon 34), 6: Amazake (あまざけ, Hidari, .289 Hon 4), 7: Imizu (いみず, Migi, .255 Hon 15), 8: Taninige (たににげ, Migi, .242 Hon 8) and 9: Nīra (にいら, Hidari Saki, .150 Hon 0 or Bō 3.12), Saitoto (さいとと, Migi Saki, .150 Hon 0, or Bō 3.44, shares his name with the Giants' first pitcher), Takāma (たかあま, Migi Saki, .150 Hon 0 or Bō 4.22), Nomuri (のむり, Hidari, .150 Hon 0 or Bō 4.10, shares his name with the Cars' No. 1), or Entō (えんとお, Migi, .150 Hon 0 or Bō 3.10). The Wheels are still fifth in the league and are still located in the bottom-left of that team selection screen; two of their new pitchers also share their names with the Giants' new first pitcher and the Cars' new No. 1, which could cause confusion if either of those teams are chosen to play against them (but only if either of those two pitchers is chosen).

Titans (タイタンズ, lit. Taitanzu, 3rd lineup) - 1: Ada (あだ, Migi, .250, Hon 9), 2: Orono (おろの, Hidari, .243 Hon 9), 3: Kogada (こがだ, Migi, .301 Hon 33) 4: Wanipari (わにぱり, Migi, .278 Hon 45), 5: Tapo (たぽ, Hidari, .287 Hon 30), 6: Ayumi (あゆみ, Migi, .278 Hon 25), 7: Agi (あぎ, Migi, .262 Hon 18) 8: Imada (いまだ, Migi, .276 Hon 2) and 9: Akanishi (あかにし, Migi Saki, .150 Hon 0 or Bō 3.00), Kīyo (きいよ, Migi Saki, .150 Hon 0 or Bō 3.32), Natada (なただ, Hidari Saki, .150 Hon 0, or Bō 4.56), Iomata (いおまた, Hidari, .150 Hon 0, or Bō 4.32), or Moda (もだ, Migi, .150 Hon 0, or Bō 4.78). The Titans are still sixth in the league, and still located in the bottom-left of the team selection screen. Now the new lineups of the six Country League teams.

Country League (カントリーリーグ)
Lionels (ライオネルズ, lit. Raioneruzu, 3rd lineup) - 1: Kuji (くじ, Migi, .245 Hon 10), 2: Irano (いらの, Hidari, .270 Hon 20), 3: Akeyari (あけやり, Migi, .299, Hon 40), 4: Kiyohera (きよへら, Migi, .290, Hon 40), 5: Detorate (でとらて, Hidari, .277, Hon 40), 6: Ichige (いちげ, Migi, .262 Hon 20), 7: Itoto (いとと, Migi, .254 Hon 6) 8: Nanabe (ななべ, Migi, .275 Hon 15) and 9: Nabehisa (なべひさ, Migi Saki, .150 Hon 0 or Bō 3.84), Nabetomi (なべとみ, Migi Saki, .150 Hon 0 or Bō 3.54), Ikaku (いかく, Migi Saki, .150 Hon 0 or Bō 2.98), Fudō (ふどう, Hidari, .150 Hon 0 or Bō 4.12), or Kateru (かてる, Migi, .150 Hon 0 or Bō 3.98). The Lionels are still up at the top of the Country League list and are still located up in the top-right of the team selection screen.

Bravos (ブラボーズ, lit. Burabōzu, 3rd lineup) - 1: Matenaga (まてなが, Hidari, .320 Hon 25), 2: Fukuwara (ふくわら, Migi, .233 Hon 10), 3: Būman (ぶうまん, Migi, .301 Hon 37), 4: Monta (もんた, Hidari, .288 Hon 38), 5: Irimine (いりみね, Migi, .276 Hon 29), 6: Fuzai (ふざい, Hidari, .278 Hon 25), 7: Ogā (おがあ, Migi, .244 Hon 15), 8: Nakishima (なきしま, Migi, .235 Hon 8), and 9: Ōji (おうじ, Hidari Saki, .150 Hon 0 or Bō 3.74), Satoto (さとと, Migi Saki, .150 Hon 0 or Bō 3.88), Kawaoki (かわおき, Migi Saki, .150 Hon 0 or Bō 4.00), Hoiman (ほいまん, Hidari, .150 Hon 0 or Bō 4.44), or Sakei (さけい, Migi, .150 Hon 0 or Bō 3.98). The Bravos are still second in the Country League, and are still located in the top-right of the team selection screen.

Hornets (ホーネッツ, lit. Hōnetsu, 3rd lineup) - 1: Yunotani (ゆのたに, Migi, .256 Hon 10), 2: Sashiki (さしき, Hidari, .267 Hon 20), 3: Appuru (あっぷる, Hidari, .284, Hon 36), 4: Banana (ばなな, Hidari, .293, Hon 30), 5: Kishiyama (きしやま, Migi, .278, Hon 38), 6: Amamoto (あまもと, Hidari, .288, Hon 26), 7: Furioto (ふりおと, Migi, .243 Hon 10), 8: Sotoda (そとだ, Migi, .250 Hon 10), and 9: Urata (うらた, Migi Saki, .150 Hon 0 or Bō 3.88), Kawauchi (かわうち, Migi Saki, .150 Hon 0, or Bō 3.78), Nyanko (にゃんこ, Migi Saki, .150 Hon 0 or Bō 4.10), Toyo (とよ, Hidari, .150 Hon 0 or Bō 3.44), or Imōe (いもうえ, Migi, .150 Hon 0 or Bō 4.36). The Hornets are still third in the Country League list and are still located in the top-right of the team selection screen.