For the 31st of October, Google released a 2016 Halloween doodle game, which can be played by any who access the company's search engine for a limited time only.
Although Google is known to update its page for special occasions like holidays, its Halloween doodle game is especially addictive. When users go into it, they're acting as the character Momo, a feline witch "who must defeat the spirits that have invaded the wizard academy." In order to do this, users need to draw symbols above the spirits with their wands, which have to match the symbol that's shown above them.
What makes one want to keep going however is the level system that's incorporated, with the five different tiers bringing a higher level of difficulty.