I’m thinking about creating a FPS game for iPad with a full campaign, multiplayer, and more. The question I have is: Will the iPad be able to handle it? Or will the app crash? And how about on Android tablets?
It might help to be more specific about what methods you will use to create the game.
ie. will it use 3D models or just 2D sprites?
how many objects do you plan to have on the screen at any one time?
are you going to have proper physics (rigidbodies etc) or just fake it?
Basically, the more you know about saving frames, improving performance, the better.
But yes, it is very possible.
Short answer: Yes, if you do it right. Esp the multi-core Android tablets should be just fine.