Core Invaders

Story
Inspired but not deterred by their fellow space invaders,
the core invaders have decided it's time to attack earth.
Armed with a weapon that disables all navigation abilities
the earth defenses don't stand a chance.
You alone have survived the onslaught using only timed boosts
of your ships thrusters and your trusty pulse laser.

Instructions
Boost your ships engines by pressing 'W' and shoot with SPACE.
Avoid or destroy ships to reach the aliens core to complete
the level.

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The game is written in C++ using Visual Studio 2015 Community edition and my open sourced mini-game-engine that I created during Ludum Dare 33.
https://github.com/AlexMartinelle/PicoEngine

The "art" was made using Gimp, Milkshape 3D, Blender and Wings3D
The music and sound effects were made using bfxr, Audacity and LMMS.
If you experience performance issues, it seems that these are caused by my dodgy sound effects routines :-) So you can toggle sound effects with 'S'.