Here some more Alternativa3D demos.
An example of showing object in 3D. You can use objects details to create interaction. Say, phone buttons are working.
Casual game demo
Ballance game prototype. You control two balls by tilting the surface. Blue ball gets bonuses and must avoid red one. If red ball is touched, blue one becomes transparent. You can get life back by touching heart icon.
This demo shows new apartaments with concrete surfaces. You can choose textures by clicking surfaces.