Here's my final game :)

[Alexander087]

#include <iostream>
#include <ctime>

void PrintIntroduction()
{  
    std::cout << " _____   ____   _   ____   _      _____ ___  __" << std::endl;
    std::cout << "/__ __\\ /  __\\ / \\ /  __\\ / \\    /  __/ \\  \\/ /" << std::endl;
    std::cout << "  / \\   |  \\/| | | |  \\/| | |    |  \\    \\   / " << std::endl;
    std::cout << "  | |   |    / | | |  __/ | |_/\\ |  /_   /   \\ " << std::endl;
    std::cout << "  \\_/   \\_/\\_\\ \\_/ \\_/    \\____/ \\____\\ /__/\\_\\ " << std::endl;
                                        
    std::cout << "\nIsola, good to hear from you!\n";
    std::cout << "Ok, so you're one step away from the runic room.\n";
    std::cout << "If you manage to get through the door, the power of the runes will be ours!\n";
    std::cout << "Seems like it's not going to be easy though, there are secret codes that you need to figure out.\n";
    std::cout << "If I'm right you'll have to solve a puzzle...\n";
    std::cout << "I'm not entirely sure if this room has security measures in place, so be careful!\n";
}

bool PlayGame(int Level)
{   
    const int CodeA = rand() % Level + Level;
    const int CodeB = rand() % Level + Level;
    const int CodeC = rand() % Level + Level;
    const int CodeSum = CodeA + CodeB + CodeC;
    const int CodeProduct = CodeA * CodeB * CodeC;

    int GuessA;
    int GuessB;
    int GuessC;

    std::cout << "\nFor now, looks like you're at the security level " << Level << ".\n";
    std::cout << "You have to find three numbers that add up to " << CodeSum << ".\n";
    std::cout << "The same three numbers also multiplie to give " << CodeProduct << ".\n";

    std::cin >> GuessA >> GuessB >> GuessC;

    int GuessSum = GuessA + GuessB + GuessC;
    int GuessProduct = GuessA * GuessB * GuessC;

    if (GuessSum == CodeSum && GuessProduct == CodeProduct)
    {
        std::cout << "\nIsola, you got through security level " << Level << ", nice job!\n";

        return true;
    }
    else
    {
        std::cout << "\nDamn, it didn't work!\n";
        std::cout << "Isola, I'm detecting movement, whatever's coming knows you're there, run!\n";

        exit(0);
    }
}

int main()
{
    PrintIntroduction();

    srand(time(NULL));
    
    const int MaxLevel = 5;
    
    int CurrentLevel = 1;
    
    while (CurrentLevel <= MaxLevel)
    {
        bool bLevelComplete = PlayGame(CurrentLevel);

        std::cin.clear();
        std::cin.ignore();

        if (bLevelComplete)
        {
            ++CurrentLevel;
        }
    }
    
    std::cout << "You've done it Isola!\n";
    std::cout << "Now take the runes and run!\n";

    return 0;
}

[Kevin-Brandon]

Phenomenal job!