Usually, web browser games give you an option to play in high, med or low quality. either directly as a game option or indirectly by right-clicking for flash options and such, but Glitch offers neither. I run a 3MBit connection, but usually can't run game on full quality. But I assure you running on lower quality can significantly upgrade your game experience, in terms of flow and response time.
I suggest having an option available to run the game in lesser modes, requiring less memory usage, to make the game accessible to all groups of internet residents.