This game should have an epilepsy warning. lol
As for the game itself, it's sort of learn as you go. There isn't a whole lot to understand though. Avoid enemies, collect upgrades(which are in the form of animals) as well as a suspicious flower that puts you into hyper drive. Game play wasn't completely innovative or amazing, but it is smooth and functional. There's no story but the game doesn't really require any.
The upgrades are solely ship upgrades that you must buy progressively which sort of made me sad because I saved up for the second to last before I bought anything and found out I couldn't skip ships.
It is slow at the beginning(collecting money) but you'll find that it gets easier with every ship as the magnet gets progressively stronger. However, if you can manage to get the "flowers"*cough*mushrooms*cough* it isn't too difficult.
3/5 for fluid gameplay.