Well folks, I've taken on board the sensible criticisms of the original version of this game, and so here it is.... the all-new, improved version 2.0 of Sonic Sky Chase......
As in the original version of this game, your mission is to help Sonic kill 25 Valkyn badniks in each level in order to progress to the next level. Use your skill and judgement to fly Tails's Tornado towards the badniks and then make Sonic spin-jump off the wing into them to kill them. Each level will have double the number of badniks on screen as the previous level. When you reach level 4, you must take on Dr. Robotnik in an aerial battle, while also still having to deal with badniks. Defeat Robotnik and the game will loop back to level 1, but you will then have to contend with even faster flying badniks than the previous time through. This means that each successive time you play through the game, you will find it much faster and harder than the previous time, until it becomes insanely quick and challenging. See how many times you can play through all four levels of the game to get the highest score you can.
CRUCIAL POINTS TO REMEMBER: (1) You don't want to avoid the badniks, you want to kill them while suffering as little damage as possible! (2) The Tornado airplane doesn't react to control inputs quite as quickly as either Sonic or Tails do on the ground, because it is an airplane flying through the air - it needs a little time to respond to your commands! (3) The number of badniks on screen at any time will double in each level. And the speed of them will double each time you defeat Robotnik in level 4 and the game loops back to level 1. So for example, the second time you play level 3, there will be four times as many badniks on screen moving twice as quickly as the first time you played level 1. On that basis, completing level 4 the fourth time though should be challenging enough even for the very best gamers out there (hopefully).
The controls are:
Up, Down, Left and Right arrow keys to move the plane Up, Down, Left and Right
Space Bar to make Sonic spin-jump
There is an invincibility cheat just in case you feel the need to use it - press Up, Down, Left, Right + "A" in the title screen to activate it - Sonic will turn yellow and will be invulnerable to enemy hits if you enter the cheat correctly. (But since you can then never die, you will need to either press your keyboard's F5 key or click your browser's refresh button to reload the game and reset it back to "normal" mode.)
Enjoy! :-D