On endless I was so lucky and then some. I only had 2 shells, one buzzsaw. One shell was on top bouncing in sync with a bottom one for 99,999 hits. Then they fell out of place cheaply.
I quote "Not even the greatest games on the strongest console can beat the addictiveness of a tiny in-browser flash game." This just expanded to Unity also.
 "Dream World"){kind=icon}
 "Epic Combo!"){kind=icon}
 "Portal: The Flash Version"){kind=icon}
 "Scene of the Crime: Golden Doll"){kind=icon}
 "Zombie Outbreak Simulator"){kind=icon}
 "Hacker vs Hacker"){kind=icon}
 "Geek Mind"){kind=icon}
 "Jacob and the Magic Piano"){kind=icon}
 "Age Of Wind 2"){kind=icon}
 "DuckLife3: Evolution"){kind=icon}
 "Doodle God 2"){kind=icon}
 "Dragon's Call"){kind=icon}
 "Transformice"){kind=icon}
 "Elephant Quest"){kind=icon}
 "Flood Runner 3"){kind=icon}
 "Massive Mayhem 3"){kind=icon}
 "Flight"){kind=icon}