This game has the top rating of 9 in the arcade section at armor games. It's a fun game to play, and well worth a try. This guide is for any people who want to complete the single player standard game who are stuck.
The first level up buy a bouncer a gunner and a miner, this increases the 'mob' count by 30. Increasing the number of 'mobs' is essential, and you should continue to level up with this in mind. DO NOT BUY ANY HOMERS, or you might end up saying doh ! Keep levelling up, keeping in mind increasing the 'mob' count until you max bomber, bouncer, gunner, miner This should occur at level 13 or 14. When possible use the miner to start the chain (scores 11 before you've even left the ground) I haven't worked out the exact formula for the combo score increase, only that as the combo count rises the score for each combo also rises. Levels 14 15 and 16 need combos of 40+, with homers this is insanely difficult, as they never miss, and you can find yourself climbing above all the 'mobs' not scoring anything while your fuel runs down, and even if you score enough you may well not be able to land in time to collect the combo score. Complete level 16 and buy the homer set. Enjoy infinite fuel and get the 75 combo medal if you haven't already, and see how high you can fly !