《魂斗羅》(Contra)是科拿米公司早期設計和發行的經典紅白機遊戲。事實上，遊戲中存在一些隱藏的武器，因其威力過於強大而在後來的正式版本中被刪除。然而，通過模擬器的操作，玩家可以重新體驗這些武器。

遊戲中的主要武器包括發射紅色子彈的M、射出激光的L、噴出火焰的F以及多方位射擊的S。這些設定儲存在卡帶內部的00AA位置。通過在模擬器中修改00A的數據改為=8，這樣就能觸發傳說中的隱藏武器。在此模式下，無數的主角影分身將從天而降，每個分身都能進行攻擊。也許是出於遊戲平衡的考慮或是單純的bug，正式發售的卡帶並未有這設定。

"Contra" is a classic famicom/NES game developed and released by Konami in its early days. In fact, there are some hidden weapons in the game that were removed from later official versions due to their overwhelming power. However, players can re-experience these weapons through the operation of emulators.

The main weapons in the game include the M, which fires red bullets, the L, which shoots lasers, the F, which spews flames, and the S, which shoots in multiple directions. These settings are stored in the 00AA position inside the software.

By modifying the data of 00A to 8 in the emulator, players can trigger the legendary hidden weapons. In this mode, countless clones of the main character will descend from the sky, each capable of attacking. Perhaps due to considerations of game balance or simply as a bug, the officially released cartridges do not have this setting.