What immediately strikes you about Super Stardust Delta is how it could look in 3D. You pilot a ship orbiting a planet. Your mission: blast the grid of asteroids and ships. Where's the 3DS version?

That's the fun - using touchscreen missiles, rear touch blackholes, and lasers switched on the fly (Lesson 1: flames beat ice), to explode things into fireworks.
Clear the slightly overlong levels to unlock minigames. As a twin-stick shooter it's inferior to the tighter, more ingenious Geometry Wars, but boosting clean through a massive iceberg is cracking.