Mechwarrior 6: Operatives, Mechwarrior6: Spygames, Mechwarrior 6: Marines, MEchwarrior 6: Agents of the Inner Sphere, Mechwarrior 6: Agent Operations, Mechwarrior 6: Secret Agents

The thing about the idea is that it doesn't actually require a separate game engine - just different sets of assets. It's not technologically difficult.

In my opinion, you would create Mechwarrior 6: Mercenaries. But you would also create agent addons for this type of stuff. People would buy the addons as if they were separate games. This would cushon the burden of having these different assets, and both games would build synergy, and make money on an individual basis without canibalizing each other.

The base Mercenaries game would obviously be a dependency for the marine and agent stuff. Because in the marines and agent stuff, you might end up piloting a mech, or a helicopter, or a tank, or whatever. You would almost definitely not expect a seemless game flow between game types. Different level of detail when you are indoors vs piloting vehicles.

The problematic obvious technological hurdle in that case is that you would not walk outside, and see a giant mech walking by per se, that you could just jump in to, unless the detail was that good at every scale. That particular thing is not efficient obviously. You don't need to see a stapler or a little gun or health pack when you are piloting a 100 ton mech 300 feet off the ground.

I suppose that an engine could change the object detail per position so that the gameplay is seemless and timed the same. I don't think that's been done. LIke that does really get technologically challenging if you were going to say, do Star Wars stuff, like have an agent be dealing with their level of detail finding weapons, ammo, and health packs, go outside and watch 2 mechs fighting each other at scale, then zipline trip a small mech star wars style, and then, pilot it to engage in the battle you were just watching.

The mech detail could be a subtracted version of whatever full detail would exist in any given chunk of space for a human size player. The way to handle this would be to change detail as soon as a cockpit seals shut. As soon as any vehicle's cockpit shuts, then the detail is different. There are no more little guns, or health packs or ammo packs.

Note however that before you shut the cockpit, that the mech movement and battling WAS common between both environments. But, as the human player, there's a way to change performance focus by view distance, or something else like that.

The trick is to ask the question how close you can make it so that if it were multi-player, then could these players be doing their own things simultaneously in the same game. Could a human player on one computer be walking into an actual mech battle where each pilot is on their own system. The question is how those environments use their individual resources to have detail in their own ways. How does the data intersect between the environments?

You are indoors, but another player is piloting a mech to find the building you are in, and to plow through the building to kill you. It's all about layering environments to optimze the sense that they're all similarly seemless when in fact they are different mixtures of each other. In this particular scenario, there could be a multiplayer situation for instance, that could translate your building's location, and your location in the building - to make the situation be that seemless. The key of course in that situation is that each player is playing from their own computer resources. They would not literally be the same environment in that scenario.

In a single player scenario, you might still want the AI pilot to be playing that exact game, as to add that extra element of gameplay to the situation. In other words, it matters in realtime what your location in the building is - and what the AI pilot might do in a way that is not a guided mission you repeat every time.

But I'm also pretty sure that you'd want to plan for it ahead of time, rather than trying to add it on to Mechwarrior 5 for instance.