add ship metaphor with ship speed
add object-wall collision using axis-aligned bounding boxes
Debug Bullet crash (updateAabbs + multithreading) & unsafe NSMutableArray enum/remove; add 3D window frame
add beam catcher; ship start/acceleration
add app icon and rename app
Add&update instructions with animations
Delete beam catcher
add engame overlay
add destination planet
add ship hit, update hit overlay
add game over; add sound effects
update layout constraints of game hud to proportional grid
update hud for better multi-size/scale behavior
implement automatic pausing when tracking is lsot, migrate to vuforia v3.0, update tutorial instruction2
update sounds, clean old files
asteroids come in the real world occasionally, put middle tap text feedback, lower texture resolution
add pose matrix smoothing, update frame mesh & texture, adjust game parameters
app store commit
commit v 1.0.1