Each area has it's own minigame, Lannar has an attack minigame in which RuneScape gold you kill other players and the players fall tickets and nothing else, (even when they have other things ) the players respawn and after time is up the participant with the most kills gets twice their tickets, and the only way to acquire mogre weapons would be to exchange tickets to get them, Lu'tog includes a poisoning miniature game where one individual poisons another and cannot attack until the player dies from poison, the participant drops just ticket regardless of what they have, the player with the most kills gets double there tickets, the tickets are the only way to get mogre toxin, and mogre poison + and mogre toxin +to use weapons.
Narran will have an agility course which is like the Brimhaven one except harder, the tickets that you get out of it may be traded for a mogre suit which raises your luck at agility, an ultra version which does increases chance in agility better and a ultimate version which does the very best in upping your luck in agility and Yun'lar is going to have a mini-game in which you kill eachother for tickets but the individual who gets killed the least gets expertise in defence and tickets for mogre armor.
Once you have finished Deep Sea Troubles you could speak to Gompar for a different one known as Shipwreck. Gompar will tell you a boat has sunk when it crashed in the walls of Mogrin. He'll want you to fix the wall. Proceed to Captain Murk and tell him to sail closer to the wallsocket.
He will do so. You may then dip. To repair the wall, then you have to have a hammer, 23 Gomrock Bars (could be bought at Mogrin in any region or mined outside with 43 mining and smelted in an underwater port, maybe not a furnace, with level 51 smithing) and level 37 structure. Repair the wall. Return up to Captain Murk and let him sail a little further away so that you can dip. He will do that. Go to the palace (could be entered through any region) and speak to Gompar.
Inform Gompar you mended the wall. He will thank you and give you 16,000 gp. Tell him you think the boat belonged to a captain that was sailing such a manner. He'll say that he saw a couple human beings swim into a nearby cave in a water cliff but it caved in because of a small earthquake. Go to the cave and mine the rocks blocking it (requires 43 mining.) Go inside the cave and it'll be dry in there because OSRS buy gold the water can not reach far enough to flood it.