Definitely eating up the battery on my LG Optimus S. The phone sat on the charger all night and in the morning I saw a notification that it was my turn to play. The battery was at 89% and the icon didn't indicate it as charging, either. This has never happened before, as my battery is always completely full after charging all night long. Unrelated to battery life, but last night I noticed that it was my turn in 2 separate games but I had been the last one to make a move so the game obviously wouldn't let me make another move. I uninstalled this morning and am back to my better battery life already. The game is fun though so I'll try it again if issues are resolved in a future release.