Cumulate

Demo file link - http://www.mediafire.com/?vatixqmkoyz

Demo filesize - 8.6 mb

Cumulate is a collect-em-up, in which your spaceship uses its giant collection force field to collect valuable gas clouds from space. Featuring unique gameplay that should challenge the reflexes of the finest shmup players, this demo has four levels.

In this demo (bug if missing)
Sounds
Intro music (midi)
Pre-level music (midi)
Stereo, position appropriate spaceship movement sounds
Warping in sound
Clouds hitting warp sound
Collecting clouds sound
Explosion sound
Controls
Arrow keys - ship has momentum
Joystick - Analog supported, affects acceleration, not speed (no friction in space)
Space bar - to start, to exit warp
Joystick button 1 - to start, exit warp
F1 - help page
R - restart room, resets all elements
Scoring System
Chain 8 of the same cloud type and multiplier becomes 2, 16 = 3, 24 = 4 and 32 or more = 5
Variable score for clouds in different levels
Multiplier affects base score for collected clouds
Points for collected clouds appear at collection point, and float up
Goal scores are achievable
Graphics
Clouds are transparent
Clouds rotate at different speeds and in different directions
Collection force field rotates and pulses
Gameplay
Game moves to next level if goal score achieved, restarts level if not

Please let me know in comments:
Does it work?
Does anything not work?
Is it clear what you have to do?
Is it fun?