Sometimes you just need a Science Game Fix, okay? And you can't wait... you just need to play the game now. Any topic. Any style. And it needs to be free because, well, money reasons. I went through SGC's list of games and tried to pick out the ones that fit the bill. (Fun, no login needed, etc.) So go ahead, indulge:
Agent Higgs - Play it Now, or see page on SGC
Bond Breaker - Play it Now, or see page on SGC
CellCraft - Play it Now, or see page on SGC
Citizen Science - Play it Now, or see page on SGC
Code Fred - Play it Now, or see page on SGC
EteRNA - Play It Now, or see page on SGC
Impulse - Play it Now, or see page on SGC
Phylo - Play it Now, or see page on SGC
Progenitor X - Play it Now, or see page on SGC
Quantum Spectre - Play it Now, or see page on SGC
Velocity Raptor - Play it Now, or see page on SGC
So there you go -- have some fun! Did I miss any free games you enjoy on SGC? Let me know!