The game described involves shooting enemies, gaining new weapons, and passing through gates to progress. There are both positive and negative gates, with the former allowing players to increase the number of allies they have by passing through them. The different types of gates include number, weapon, and obstacle gates. Additionally, players can acquire new weapons and face different obstacles and enemies as they progress through the game.<br/><br/>To increase the number of allies, players must pass through positive gates. These gates are categorized as number gates, which increment the actual number of allies a player has. In addition to number gates, there are also weapon and obstacle gates. Weapon gates provide players with new weapons, while obstacle gates present new challenges that must be overcome to progress.<br/><br/>As players progress through the game, they will encounter different types of enemies and obstacles. These include both physical obstacles and enemies that must be defeated through shooting. By successfully navigating through these challenges, players can increase the number of doors they pass and the number of allies they have. Overall, the game involves a combination of shooting, strategy, and problem-solving to progress through different levels and challenges. <br/><br/>In summary, the game involves shooting enemies, gaining new weapons, and passing through different types of gates to progress. Positive gates allow players to increase the number of allies they have, while different types of gates provide new weapons and obstacles to overcome. Players must navigate through different challenges and enemies to progress through the game and increase the number of doors they pass.