Physics Invader = Space Invader + Physics
nekogames.jp
nekogames.jp
Also, there is an interesting "hack" to me, but it's sort of a stretch. Notice that the game powered by the Box2D physics engine. It's cool to me how that physics engine has revolutionized 2D games in a small way. Erin Catto, its creator, decided to open source it, and now suddenly we have hundreds of games that have been able to experiment around with physics in gameplay. And new gameplay in small games is just one step away from new gameplay in AAA titles like Half-Life 2 ... Portal was inspired by a small game that a few Digipen students created for their final project, for example. (It's called Narbacular Drop. Check it out -- it's fun! http://tinyurl.com/5m2qtp)
So I think we should encourage people to continue experimenting with new gameplay ideas... hint hint.
Next physics invaders... + [add your own mix]. I choose +pony.
I'd argue that every innovation involves mixing two (or more) things to produce a third. So calling it "typical" is a gross understatement.
If you don't find the game compelling, it's not because the combinatorial (a + b = c) form of innovation is somehow uninteresting, but because the elements are.
I agree that (space invaders) + physics = (moderately more engaging version of space invaders).