When they get smaller though, there's a lot more of the circles with one connection. The way the puzzles look in the end changes pretty drastically, and the game gets a little new while the difficulty resets itself :D
Gorgeous. Beautiful, really. It's too bad you can't destroy the darklings after the runestones are all lit, and you should be able to descend through some of the floors, but a really beautiful game.
Oh, nevermind. Only upgrade your cannon, go in one direction and shoot forward. You overtake the bullets, and everything caught in your wake/tail dies.
Fun, but I'm a little disappointed that the cannon is so important again. Run in one direction, and shoot behind you. If your cannon and engine are good enough (mostly your cannon) you'll win by attrition sooner or later.
 "Robot Dinosaurs That Shoot Beams When They Roar"){kind=icon}
 "Raider: Episode 1"){kind=icon}
 "Run"){kind=icon}
 "loops of zen"){kind=icon}
 "colorfill"){kind=icon}
 "Kaleidoscope Reef"){kind=icon}
 "Red"){kind=icon}
 "Plazma Burst: Forward to the past"){kind=icon}
 "Particles"){kind=icon}
 "Blocks With Letters On"){kind=icon}
 "William and Sly"){kind=icon}
 "Ether Cannon"){kind=icon}
 "The Space Game: Missions"){kind=icon}
 "Bang! Heroes"){kind=icon}
 "Warbears"){kind=icon}