Dominent

const uint32 questionsTotal = 4; // Amount of questions asked from player
const uint32 questionOptions = 2; // Amount of question options in each question

class npc_nkunchev : public CreatureScript
{
public:
    npc_nkunchev() : CreatureScript("npc_nkunchev") { }

    bool OnGossipHello(Player * player, Creature * creature)
    {
        player->ADD_GOSSIP_ITEM(0, "I want to play the game!", 0, 0);
        player->ADD_GOSSIP_ITEM(0, "No thank you. Bye.", 0, 1);
        player->PlayerTalkClass->SendGossipMenu(9425, creature->GetGUID());
        return true;
    }

    bool OnGossipSelect(Player * player, Creature * creature, uint32 question, uint32 answer)
    {
        player->PlayerTalkClass->ClearMenus();

        if(!question && action) // is main menu option (bye)
        {
            player->CLOSE_GOSSIP_MENU();
            return true;
        }

        if(answer != 1) // player answered the question
        {
            if(answer) // Answer was not right (right is 0)
            {
                // failed a question (question tells you which one)
                // do something ..
                player->CLOSE_GOSSIP_MENU();
                return true;
            }

            // Answer was right

            if(question > (questionsTotal-1)*questionOptions && question <= questionsTotal*questionOptions)
            {
                // Player won the game
                // reward
                player->CLOSE_GOSSIP_MENU();
                return true;
            }

            // Get a new random question from next category
            for (uint32 i = 0; true; ++i)
            {
                if (question <= questionOptions*i)
                {
                    question = urand(questionOptions*i+1, questionOptions*i+questionOptions);
                    break;
                }
            }
        }

        answer = 0;
        switch (question)
        {
        case 1:
            player->ADD_GOSSIP_ITEM(0, "What are the races for horde?", question, ++answer); // answer is 1 on the question. That allows the question to show up again.
            player->ADD_GOSSIP_ITEM(0, "Blood Elf, Undead, Warlock, Orc, Troll", question, ++answer);
            player->ADD_GOSSIP_ITEM(0, "Blood Elf, Undead, Tauren, Orc, Troll", question, 0); // correct is 0
            player->ADD_GOSSIP_ITEM(0, "Human, Human, Human , Gnome", question, ++answer);
            player->ADD_GOSSIP_ITEM(0, "Troll, Goblin, Hot Dogs", question, ++answer);
            player->PlayerTalkClass->SendGossipMenu(9425, creature->GetGUID());
            break;
        case 2:
            // show menu to player.

            // Use the same model as above. Correct question is still 0.
            break;
        case 3:
            // show menu to player.

            // Use the same model as above. Correct question is still 0.
            break;
        case 4:
            // show menu to player.

            // Use the same model as above. Correct question is still 0.
            break;
        default:
            player->CLOSE_GOSSIP_MENU();
            break;
        }
    }
};