I'd make a few videogames. First would be an FPS, as others have mentioned, and it would be set during the DH-Toa or BoM War(s), as others have mentioned. Pretty simple and straightforward. Second would be a Titanfall-style videogame. You're a Toa in an alternate universe where Toa are basically sellswords, ExoToa being the Titans. It'd play similar to Titanfall, with a storyline that somehow involves Dark Hunters and the BoM, though not aligned with any side. Non-canon. Third would be an RPG, a blend of Fallout/Skyrim (since they play similarly, if you think about it) with some Dark Souls combat thrown in. You'd play as some race, each with their own perks, or a renegade Toa, which is even in all, with a slight emphasis in strength. Fourth would be a Civ-type game. You're a Turaga, controlling a village as it expands and grows. Fifth would be an MMO, set in Spherus Magna or in Metru Nui, the frormer being after the main storyline and the latter set around the Toa-DH war, with the option to pick which side you're on in the second setting. Think KOTOR.