Portal Master is a casual 3D puzzle game, focused on a very interesting mechanic: create portals to manipulate the environment, redirect objects or attacks and solve situations.
The basis of the game is quite simple but effective: you place portals to change trajectories (for example, of bullets or energy) and thus overcome levels or eliminate enemies. As you advance, the levels become more complex, new elements appear (lasers, platforms, traps...) You need to combine logic, reflexes and creativity, this makes it go from being easy at first to quite challenging later.
AppGirl has developed this fun Portal game.