W00t!
This game is pretty cool, the concept is simple but new, along with the chain reactions that were pretty fun to experiment and do...
Great graphics and animations...and the change of the explosive sprites at each level was definately a plus. Appropriate sound too!
However one thing that i guess can be mproved is the reaction time to collect bonuses, it occurs to me that the bomb must be moving OVER directly at the centre of each bonus for it to be collected... and there is also a lag time as well...perhaps the bonuses can be made more sensitive?
Otherwise, Great WORK!