an interactive Doodle where the player can use a catapult to launch their clay gnomes into the farthest reach of their garden. On 15 September 2018, for India, Sir Mokshagundam Visvesvaraya’s 158th Birthday. On whose birthday India celebrates Engineer's day. On October 30, 2018, for Halloween, Google added a multiplayer game called Great Ghoul Duel, featuring two teams of ghosts racing to collect spirits and steal them from the other team. Games can support up to 8 players, and users could create custom invite links or match with random users across the globe. Great Ghoul Duel was the first Doodle to support multiplayer over the internet. On November 6, 2018, for the United States elections, Google changed their logo to "Go Vote." On March 21, 2019, Google celebrated German composer and musician Johann Sebastian Bach by creating the first Doodle that uses artificial intelligence to make music. When a button is pressed, the Doodle uses machine learning to harmonize a user-created melody into Bach's signature music style (or alternatively into a Bach 80s rock style hybrid if an amp on the right side is clicked). On July 16–20, 2019, Google celebrated the 50th anniversary of the Apollo 11 Moon landing by NASA where Neil Armstrong became the first man on the Moon. On 12 August 2019, for India, Google commemorated Vikram Sarabhai's 100th birth anniversary. He is internationally regarded as the Father of the Indian Space Program. 2020s On March 20, 2020, in the midst of the COVID-19 pandemic, Google honored Ignaz Semmelweis for pioneering the practice of hand washing. The Doodle animation specifically showcased how to properly and thoroughly wash one's hands. Google also released several doodles in the following weeks thanking various industry workers who helped people out during the pandemic. Some games were re-released for people staying at home during lockdown to play. On April 22, 2020, in celebration of the 50th anniversary of Earth Day, a Doodle game was created in partnership with the Honeybee Conservancy, wherein a honeybee is guided by the player to pollinate flowers, while facts about the honeybee and its impact are shared between levels. On June 30, 2020, Google celebrated Marsha P. Johnson with a Google Doodle. On September 1, 2020, Google honored Jackie Ormes, known for being the first African-American woman cartoonist, along with being the creator of the Torchy Brown comic strip and the Patty-Jo 'n' Ginger panel. The