[quote="newt":1uve3sej]Hundreds, thousands, hundreds of thousands, it all depends on the size of the sprite.[/quote:1uve3sej]
No, I wouldn't go over 2000-3000 regular size sprites onscreen at any given time, (<128x128) if you want to maintain good frame rate on modern non gaming pcs. Even with a 4x4 sprite, fps will slow down displaying over 15000 of them (on my fairly modern pc (8300 GS)), and that's without any events processing on them. Construct cannot handle hundreds of thousands of sprites effectively. However, fps all depends on your game. Start using shaders and you'll see slowdown a lot faster than displaying a lot of sprites.