Facebook games frequently update their "Anticheat" signatures. If the game detects a sudden jump in score that doesn't align with your play time or "Floor Reach," your score may be flagged or your access to the game restricted.
For players who want the most control, is a powerful memory scanner and editor that can be used to modify nearly any aspect of a running process. While the Facebook version of Icy Tower runs in a web browser, Cheat Engine can still be used if you attach it to the correct process.